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Neptunium

Index Neptunium

Neptunium is a chemical element with symbol Np and atomic number 93. [1]

167 relations: Abundance of the chemical elements, Abundances of the elements (data page), Actinide, Actinides in the environment, Actinocene, Allotropes of plutonium, Americium, Americium-241, Amtor, Asphalt, Atom, Atomic radii of the elements (data page), Atomic radius, Ausonium, Bananaman, Berkelium, Binary compounds of silicon, Bioremediation of radioactive waste, Bismuth, Bohemium, Boiling points of the elements (data page), Cavendish Laboratory, Chemical element, Chemical elements in East Asian languages, Chemistry: A Volatile History, Chernobyl disaster, Compounds of fluorine, CPK coloring, Curium, Deaths in August 2004, Decay chain, Densities of the elements (data page), Depleted uranium, Dubnium, Edwin McMillan, Einsteinium, Electrical resistivities of the elements (data page), Electron affinity (data page), Electron configuration, Electron configurations of the elements (data page), Electron shell, Electronegativities of the elements (data page), Emilio Segrè, Extended periodic table, Ferromagnetism, Fertile material, Fluoride volatility, Francium, Fritz Houtermans, Germanium, ..., Glenn T. Seaborg, Halogen, Heat capacities of the elements (data page), Heats of fusion of the elements (data page), Heats of vaporization of the elements (data page), Heavy metals, History of nuclear weapons, Index of chemistry articles, Inorganic compounds by element, Institutions in the Southern Victory Series, Ion exchange, Ionic radius, Ionization energies of the elements (data page), Island of stability, Isotopes of neptunium, Isotopes of nihonium, Isotopes of plutonium, Joseph W. Kennedy, Kurt Starke, Lawrence Berkeley National Laboratory, Liquid fluoride thorium reactor, Liquid–liquid extraction, List of acronyms: N, List of chemical element name etymologies, List of chemical elements, List of elements by atomic properties, List of elements by stability of isotopes, List of eponyms (L–Z), List of International Organization for Standardization standards, List of MeSH codes (D01), List of misidentified chemical elements, List of oxidation states of the elements, List of people whose names are used in chemical element names, List of places used in the names of chemical elements, List of Superfund sites in Kentucky, List of University of California, Berkeley alumni, List of world production, Major actinide, MAUD Committee, Mössbauer spectroscopy, Melting points of the elements (data page), Metal ions in aqueous solution, Metalloid, Minor actinide, Molar ionization energies of the elements, Naming of chemical elements, Neopentane, Neptune, Neptune (disambiguation), Neptunium(III) fluoride, Neptunium(IV) fluoride, Neptunium(V) fluoride, Neptunium(VI) fluoride, Neptunocene, Nicholas Kemmer, Nihonium, Norman Feather, NP, Nuclear chemistry, Nuclear decommissioning, Nuclear reprocessing, Nuclear transmutation, Organoneptunium chemistry, Otto Hahn, Oxohalide, Period (periodic table), Period 7 element, Periodic table, Periodic table (crystal structure), Philip Abelson, Photofission, Pirates of Venus, Pluto, Plutonium, Plutonium-238, Plutonium-241, Post-transition metal, Potential applications of graphene, Prices of elements and their compounds, Przybylski's Star, Pyrophoricity, Radon, Rare-earth element, Rhenium, Roles of chemical elements, S-50 (Manhattan Project), Savannah River Site, Science (journal), Sequanium, Spent nuclear fuel, Standard electrode potential (data page), Subterfuge (video game), Symbol (chemistry), Synthetic element, The Undying Fire (Pratt novel), Thermal conductivities of the elements (data page), Thorium, Timeline of chemical element discoveries, Timeline of chemistry, Timeline of the 20th century, Timeline of the San Francisco Bay Area, Trace radioisotope, Transuranium element, Trivial name, Tube Alloys, Université de Montréal, University of California, Berkeley, Uranium, Uranium dioxide, Uranocene, Vapor pressures of the elements (data page), Waste Isolation Pilot Plant, Yoshio Nishina, Yvette Cauchois, Zangger Committee, 1940 in science, 93 (number). Expand index (117 more) »

Abundance of the chemical elements

The abundance of the chemical elements is a measure of the occurrence of the chemical elements relative to all other elements in a given environment.

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Abundances of the elements (data page)

No description.

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Actinide

The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.

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Actinides in the environment

Actinides in the environment refer to the sources, environmental behaviour and effects of actinides in Earth's environment.

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Actinocene

An actinocene is a type of metallocene compound that contains an element from the actinide series.

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Allotropes of plutonium

Plutonium occurs in a variety of allotropes, even at ambient pressure.

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Americium

Americium is a synthetic chemical element with symbol Am and atomic number 95.

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Americium-241

Americium-241 (241Am) is an isotope of americium.

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Amtor

The Amtor or Venus Series is a science fantasy series consisting of four novels and one novelette written by American author Edgar Rice Burroughs.

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Asphalt

Asphalt, also known as bitumen, is a sticky, black, and highly viscous liquid or semi-solid form of petroleum.

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Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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Atomic radii of the elements (data page)

The atomic radius of a chemical element is the distance from the centre of the nucleus to the outermost shell of the electron.

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Atomic radius

The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding cloud of electrons.

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Ausonium

Ausonium (atomic symbol Ao) was the name assigned to the element with atomic number 93, now known as neptunium.

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Bananaman

Bananaman is a fictional character appearing in British comic books.

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Berkelium

Berkelium is a transuranic radioactive chemical element with symbol Bk and atomic number 97.

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Binary compounds of silicon

Binary compounds of silicon are binary chemical compounds containing silicon and one other chemical element.

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Bioremediation of radioactive waste

Bioremediation of radioactive waste or bioremediation of radionuclides is an application of bioremediation based on the use of biological agents bacteria, plants and fungi (natural or genetically modified) to catalyze chemical reactions that allow the decontamination of sites affected by radionuclides.

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Bismuth

Bismuth is a chemical element with symbol Bi and atomic number 83.

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Bohemium

Bohemium was the name assigned to the element with atomic number 93, now known as neptunium, when its discovery was first incorrectly alleged.

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Boiling points of the elements (data page)

No description.

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Cavendish Laboratory

The Cavendish Laboratory is the Department of Physics at the University of Cambridge, and is part of the School of Physical Sciences.

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Chemical element

A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).

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Chemical elements in East Asian languages

The names for chemical elements in East Asian languages, along with those for some chemical compounds (mostly organic), are among the newest words to enter the local vocabularies.

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Chemistry: A Volatile History

Chemistry: A Volatile History is a 2010 BBC documentary on the history of chemistry presented by Jim Al-Khalili.

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Chernobyl disaster

The Chernobyl disaster, also referred to as the Chernobyl accident, was a catastrophic nuclear accident.

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Compounds of fluorine

Fluorine forms a great variety of chemical compounds, within which it almost always adopts an oxidation state of −1.

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CPK coloring

In chemistry, the CPK coloring is a popular color convention for distinguishing atoms of different chemical elements in molecular models.

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Curium

Curium is a transuranic radioactive chemical element with symbol Cm and atomic number 96.

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Deaths in August 2004

The following is a list of notable deaths in August 2004.

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Decay chain

In nuclear science, the decay chain refers to a series of radioactive decays of different radioactive decay products as a sequential series of transformations.

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Densities of the elements (data page)

No description.

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Depleted uranium

Depleted uranium (DU; also referred to in the past as Q-metal, depletalloy or D-38) is uranium with a lower content of the fissile isotope U-235 than natural uranium.

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Dubnium

Dubnium is a synthetic chemical element with symbol Db and atomic number 105.

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Edwin McMillan

Edwin Mattison McMillan (September 18, 1907 – September 7, 1991) was an American physicist and Nobel laureate credited with being the first-ever to produce a transuranium element, neptunium.

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Einsteinium

Einsteinium is a synthetic element with symbol Es and atomic number 99.

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Electrical resistivities of the elements (data page)

As quoted at http://www.webelements.com/ from these sources.

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Electron affinity (data page)

This page deals with the electron affinity as a property of isolated atoms or molecules (i.e. in the gas phase).

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Electron configuration

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.

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Electron configurations of the elements (data page)

This page shows the electron configurations of the neutral gaseous atoms in their ground states.

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Electron shell

In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus.

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Electronegativities of the elements (data page)

No description.

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Emilio Segrè

Emilio Gino Segrè (1 February 1905 – 22 April 1989) was an Italian-American physicist and Nobel laureate, who discovered the elements technetium and astatine, and the antiproton, a subatomic antiparticle, for which he was awarded the Nobel Prize in Physics in 1959.

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Extended periodic table

An extended periodic table theorizes about elements beyond oganesson (beyond period 7, or row 7).

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Ferromagnetism

Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.

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Fertile material

Fertile material is a material that, although not itself fissionable by thermal neutrons, can be converted into a fissile material by neutron absorption and subsequent nuclei conversions.

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Fluoride volatility

Fluoride volatility is the tendency of highly fluorinated molecules to vaporize at comparatively low temperatures.

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Francium

Francium is a chemical element with symbol Fr and atomic number 87.

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Fritz Houtermans

Friedrich Georg "Fritz" Houtermans (January 22, 1903 – March 1, 1966) was a Dutch-Austrian-German atomic and nuclear physicist born in Zoppot near Danzig, West Prussia to a Dutch father, who was a wealthy banker.

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Germanium

Germanium is a chemical element with symbol Ge and atomic number 32.

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Glenn T. Seaborg

Glenn Theodore Seaborg (April 19, 1912February 25, 1999) was an American chemist whose involvement in the synthesis, discovery and investigation of ten transuranium elements earned him a share of the 1951 Nobel Prize in Chemistry.

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Halogen

The halogens are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

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Heat capacities of the elements (data page)

No description.

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Heats of fusion of the elements (data page)

No description.

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Heats of vaporization of the elements (data page)

No description.

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Heavy metals

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers.

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History of nuclear weapons

Nuclear weapons possess enormous destructive power from nuclear fission or combined fission and fusion reactions.

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Index of chemistry articles

Chemistry (from Egyptian kēme (chem), meaning "earth") is the physical science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions.

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Inorganic compounds by element

This is a list of common inorganic and organometallic compounds of each element.

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Institutions in the Southern Victory Series

The Southern Victory Series is a fan name given to a series of Harry Turtledove alternate history novels.

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Ion exchange

Ion exchange is an exchange of ions between two electrolytes or between an electrolyte solution and a complex.

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Ionic radius

Ionic radius, rion, is the radius of an atom's ion in ionic crystals structure.

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Ionization energies of the elements (data page)

No description.

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Island of stability

In nuclear physics, the island of stability is the prediction that a set of heavy nuclides with a near magic number of protons and neutrons will temporarily reverse the trend of decreasing stability in elements heavier than uranium.

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Isotopes of neptunium

Neptunium (93Np) is usually considered an artificial element, although trace quantities are found in nature, so thus a standard atomic weight cannot be given.

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Isotopes of nihonium

Nihonium (113Nh) is a synthetic element.

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Isotopes of plutonium

Plutonium (94Pu) is an artificial element, except for trace quantities resulting from neutron capture by uranium, and thus a standard atomic weight cannot be given.

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Joseph W. Kennedy

Joseph William Kennedy (May 30, 1916 – May 5, 1957) was an American chemist who was a co-discoverer of plutonium, along with Glenn T. Seaborg, Edwin McMillan and Arthur Wahl.

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Kurt Starke

Kurt Starke (1911 in Berlin – 19 January 2000) was a German radiochemist.

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Lawrence Berkeley National Laboratory

Lawrence Berkeley National Laboratory (LBNL), commonly referred to as Berkeley Lab, is a United States national laboratory located in the Berkeley Hills near Berkeley, California that conducts scientific research on behalf of the United States Department of Energy (DOE).

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Liquid fluoride thorium reactor

The liquid fluoride thorium reactor (acronym LFTR; often pronounced lifter) is a type of molten salt reactor.

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Liquid–liquid extraction

Liquid–liquid extraction (LLE), also known as solvent extraction and partitioning, is a method to separate compounds or metal complexes, based on their relative solubilities in two different immiscible liquids, usually water (polar) and an organic solvent (non-polar).

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List of acronyms: N

(Main list of acronyms).

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List of chemical element name etymologies

This is the list of etymologies for all chemical element names.

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List of chemical elements

, 118 chemical elements are identified.

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List of elements by atomic properties

This is a list of chemical elements and their atomic properties, ordered by Atomic number.

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List of elements by stability of isotopes

Atomic nuclei consist of protons and neutrons, which attract each other through the nuclear force, while protons repel each other via the electric force due to their positive charge.

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List of eponyms (L–Z)

An eponym is a person (real or fictitious) whose name has become identified with a particular object or activity.

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List of International Organization for Standardization standards

This is a list of publishedThis list generally excludes draft versions.

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List of MeSH codes (D01)

This is the fourth part of the list of the "D" codes for MeSH.

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List of misidentified chemical elements

Chemical elements that have been mistakenly "discovered".

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List of oxidation states of the elements

This is a list of known oxidation states of the chemical elements, excluding nonintegral values.

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List of people whose names are used in chemical element names

Below is the list of people whose names are used in chemical element names.

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List of places used in the names of chemical elements

40 of the 118 chemical elements have names associated with, or specifically named for, places around the world or among astronomical objects.

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List of Superfund sites in Kentucky

This is a list of Superfund sites in Kentucky designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law.

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List of University of California, Berkeley alumni

This page lists notable alumni and students of the University of California, Berkeley.

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List of world production

This is a list of annual world production.

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Major actinide

Major actinides is a term used in the nuclear power industry that refers to the plutonium and uranium present in used nuclear fuel, as opposed to the minor actinides neptunium, americium, curium, berkelium, and californium.

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MAUD Committee

The MAUD Committee was a British scientific working group formed during the Second World War.

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Mössbauer spectroscopy

Mössbauer spectroscopy is a spectroscopic technique based on the Mössbauer effect.

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Melting points of the elements (data page)

No description.

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Metal ions in aqueous solution

A metal ion in aqueous solution (aqua ion) is a cation, dissolved in water, of chemical formula z+.

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Metalloid

A metalloid is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them.

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Minor actinide

The minor actinides are the actinide elements in used nuclear fuel other than uranium and plutonium, which are termed the major actinides.

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Molar ionization energies of the elements

These tables list values of molar ionization energies, measured in kJ mol−1.

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Naming of chemical elements

Chemical elements may be named from various sources: sometimes based on the person who discovered it, or the place it was discovered.

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Neopentane

Neopentane, also called 2,2-dimethylpropane, is a double-branched-chain alkane with five carbon atoms.

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Neptune

Neptune is the eighth and farthest known planet from the Sun in the Solar System.

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Neptune (disambiguation)

Neptune is a planet in the Solar System, named after Neptune (mythology), a god in Ancient Roman mythology.

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Neptunium(III) fluoride

Neptunium(III) fluoride or neptunium trifluoride is a chemical compound of neptunium and fluorine with the formula NpF3.

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Neptunium(IV) fluoride

Neptunium(IV) fluoride or neptunium tetrafluoride is a chemical compound of neptunium and fluorine with the formula NpF4.

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Neptunium(V) fluoride

Neptunium(V) fluoride or neptunium pentafluoride is a chemical compound of neptunium and fluorine with the formula NpF5.

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Neptunium(VI) fluoride

Neptunium hexafluoride (NpF6) is the highest fluoride of neptunium.

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Neptunocene

Neptunocene, Np(C8H8)2, is an organoneptunium compound composed of a neptunium atom sandwiched between two cyclooctatetraenide rings.

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Nicholas Kemmer

Prof Nicholas Kemmer, FRS FRSE (7 December 1911 – 21 October 1998), was a Russian-born nuclear physicist working in Britain, who played an integral and leading edge role in United Kingdom's nuclear programme, and was known as a mentor of Abdus Salam – a Nobel laureate in physics.

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Nihonium

Nihonium is a synthetic chemical element with symbol Nh and atomic number 113.

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Norman Feather

Norman Feather FRS FRSE PRSE (16 November 1904, Pecket Well, Yorkshire – 14 August 1978, Christie Hospital, Manchester), was an English nuclear physicist.

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NP

NP may refer to.

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Nuclear chemistry

Nuclear chemistry is the subfield of chemistry dealing with radioactivity, nuclear processes, such as nuclear transmutation, and nuclear properties.

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Nuclear decommissioning

Nuclear decommissioning is the process whereby a nuclear facility is dismantled to the point that it no longer requires measures for radiation protection.

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Nuclear reprocessing

Nuclear reprocessing technology was developed to chemically separate and recover fissionable plutonium from spent nuclear fuel.

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Nuclear transmutation

Nuclear transmutation is the conversion of one chemical element or an isotope into another chemical element.

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Organoneptunium chemistry

Organoneptunium chemistry is the chemical science exploring the properties, structure and reactivity of organoneptunium compounds, which are organometallic compounds containing a carbon to neptunium chemical bond.

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Otto Hahn

Otto Hahn, (8 March 1879 – 28 July 1968) was a German chemist and pioneer in the fields of radioactivity and radiochemistry.

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Oxohalide

Molecular oxohalides (oxyhalides) are a group of chemical compounds in which both oxygen and halogen atoms are attached to another chemical element A in a single molecule.

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Period (periodic table)

A period in the periodic table is a horizontal row.

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Period 7 element

A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the chemical elements.

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Periodic table

The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends.

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Periodic table (crystal structure)

For elements that are solid at standard temperature and pressure the table gives the crystalline structure of the most thermodynamically stable form(s) in those conditions.

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Philip Abelson

Philip Hauge Abelson (April 27, 1913 – August 1, 2004) was an American physicist, a scientific editor, and a science writer.

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Photofission

Photofission is a process in which a nucleus, after absorbing a gamma ray, undergoes nuclear fission (splits into two or more fragments).

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Pirates of Venus

Pirates of Venus is the first book in the Venus series (also called the "Carson Napier of Venus series") by American writer Edgar Rice Burroughs, the last major series in Burroughs's career (the other major series were Tarzan, Barsoom, and Pellucidar).

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Pluto

Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.

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Plutonium

Plutonium is a radioactive chemical element with symbol Pu and atomic number 94.

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Plutonium-238

Plutonium-238 (also known as Pu-238 or 238Pu) is a radioactive isotope of plutonium that has a half-life of 87.7 years.

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Plutonium-241

Plutonium-241 (Pu-241) is an isotope of plutonium formed when plutonium-240 captures a neutron.

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Post-transition metal

Post-transition metals are a set of metallic elements in the periodic table located between the transition metals to their left, and the metalloids to their right.

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Potential applications of graphene

Potential graphene applications include lightweight, thin, flexible, yet incredibly lightweight to, electric/photonics circuits, solar cells, and various medical, chemical and industrial processes enhanced or enabled by the use of new graphene materials.

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Prices of elements and their compounds

This table lists the elements by their name and gives some historical prices for them and their commonly traded compounds.

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Przybylski's Star

Przybylski's Star, or HD 101065, is a rapidly oscillating Ap star that is located at a distance of roughly from the Sun in the southern constellation of Centaurus.

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Pyrophoricity

A pyrophoric substance (from Greek πυροφόρος, pyrophoros, "fire-bearing") ignites spontaneously in air at or below 55 °C (130 °F).

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Radon

Radon is a chemical element with symbol Rn and atomic number 86.

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Rare-earth element

A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.

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Rhenium

Rhenium is a chemical element with symbol Re and atomic number 75.

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Roles of chemical elements

This table is designed to show the role(s) performed by each chemical element, in nature and in technology.

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S-50 (Manhattan Project)

The S-50 Project was the Manhattan Project's effort to produce enriched uranium by liquid thermal diffusion during World War II.

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Savannah River Site

The Savannah River Site (SRS) is a nuclear reservation in the United States in the state of South Carolina, located on land in Aiken, Allendale, and Barnwell counties adjacent to the Savannah River, southeast of Augusta, Georgia.

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Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

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Sequanium

Sequanium was the proposed name for a new element found by the Romanian physicist Horia Hulubei in 1939.

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Spent nuclear fuel

Spent nuclear fuel, occasionally called used nuclear fuel, is nuclear fuel that has been irradiated in a nuclear reactor (usually at a nuclear power plant).

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Standard electrode potential (data page)

The data values of standard electrode potentials are given in the table below, in volts relative to the standard hydrogen electrode, and are for the following conditions.

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Subterfuge (video game)

Subterfuge is a real-time strategy video game developed by Ron Carmel and Noel Llopis.

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Symbol (chemistry)

In relation to the chemical elements, a symbol is a code for a chemical element.

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Synthetic element

In chemistry, a synthetic element is a chemical element that does not occur naturally on Earth, and can only be created artificially.

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The Undying Fire (Pratt novel)

The Undying Fire is a science fiction novel by Fletcher Pratt.

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Thermal conductivities of the elements (data page)

No description.

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Thorium

Thorium is a weakly radioactive metallic chemical element with symbol Th and atomic number 90.

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Timeline of chemical element discoveries

The discovery of the 118 chemical elements known to exist today is presented here in chronological order.

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Timeline of chemistry

The timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.

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Timeline of the 20th century

This is a timeline of the 20th century.

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Timeline of the San Francisco Bay Area

This is a timeline of the San Francisco Bay Area in California, events in the nine counties that border on the San Francisco Bay, and the bay itself.

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Trace radioisotope

A trace radioisotope is a radioisotope that occurs naturally in trace amounts (i.e. extremely small).

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Transuranium element

The transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92 (the atomic number of uranium).

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Trivial name

In chemistry, a trivial name is a nonsystematic name for a chemical substance.

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Tube Alloys

Tube Alloys was a code name of the clandestine research and development programme, authorised by the United Kingdom, with participation from Canada, to develop nuclear weapons during the Second World War.

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Université de Montréal

The Université de Montréal (UdeM) is a public research university in Montreal, Quebec, Canada.

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University of California, Berkeley

The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public research university in Berkeley, California.

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Uranium

Uranium is a chemical element with symbol U and atomic number 92.

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Uranium dioxide

Uranium dioxide or uranium(IV) oxide (2), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite.

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Uranocene

Uranocene, U(C8H8)2, is an organouranium compound composed of a uranium atom sandwiched between two cyclooctatetraenide rings.

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Vapor pressures of the elements (data page)

No description.

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Waste Isolation Pilot Plant

The Waste Isolation Pilot Plant, or WIPP, is the world's third deep geological repository (after closure of Germany's Repository for radioactive waste Morsleben and the Schacht Asse II Salt Mine) licensed to permanently dispose of transuranic radioactive waste for 10,000 years that is left from the research and production of nuclear weapons.

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Yoshio Nishina

was a Japanese physicist.

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Yvette Cauchois

Yvette Cauchois (19 December 1908 – 19 November 1999) was a French physicist known for her contributions to x-ray spectroscopy and x-ray optics, and for pioneering European synchrotron research.

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Zangger Committee

The Zangger Committee, also known as the Nuclear Exporters Committee, sprang from Article III.2 of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) which entered into force on March 5, 1970.

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1940 in science

The year 1940 in science and technology involved some significant events, listed below.

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93 (number)

93 (ninety-three) is the natural number following 92 and preceding 94.

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Redirects here:

Element 93, Np (element).

References

[1] https://en.wikipedia.org/wiki/Neptunium

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