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24 relations: Atomic number, Bismuth-209, Bohrium, Carlo Perrier, Chemical element, Chloroplast, Electron configuration, Electron shell, Emilio Segrè, Ida Noddack, International Union of Pure and Applied Chemistry, Isotopes of chromium, Isotopes of technetium, Kilogram, Manganese, Masataka Ogawa, Otto Berg (scientist), Periodic table, Peter Armbruster, Rhenium, Spontaneous fission, Technetium, Thorianite, Walter Noddack.
Atomic number
The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.
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Bismuth-209
Bismuth-209 is the "quasi-stable" isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay).
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Bohrium
Bohrium is a synthetic chemical element with symbol Bh and atomic number 107.
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Carlo Perrier
Carlo Perrier (7 July 1886 – 22 May 1948) was an Italian mineralogist who did extensive research on the element technetium in 1936.
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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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Chloroplast
Chloroplasts are organelles, specialized compartments, in plant and algal cells.
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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 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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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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Ida Noddack
Ida Noddack (25 February 1896 – 24 September 1978), née Ida Tacke, was a German chemist and physicist.
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International Union of Pure and Applied Chemistry
The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.
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Isotopes of chromium
Naturally occurring chromium (24Cr) is composed of four stable isotopes; 50Cr, 52Cr, 53Cr, and 54Cr with 52Cr being the most abundant (83.789% natural abundance).
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Isotopes of technetium
Technetium (43Tc) is the first of the two elements lighter than bismuth that have no non-radioactive isotopes; the other such element is promethium.
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Kilogram
The kilogram or kilogramme (symbol: kg) is the base unit of mass in the International System of Units (SI), and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "Le Grand K" or "Big K"), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France.
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Manganese
Manganese is a chemical element with symbol Mn and atomic number 25.
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Masataka Ogawa
was a Japanese chemist known for the discovery of rhenium, which he named nipponium.
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Otto Berg (scientist)
Otto Berg (23 November 1873 – 1939) was a German scientist.
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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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Peter Armbruster
Peter Armbruster (born 25 July 1931 in Dachau, Bavaria) is a physicist at the Gesellschaft für Schwerionenforschung (GSI) facility in Darmstadt, Germany, and is credited with co-discovering elements 107 (bohrium), 108 (hassium), 109 (meitnerium), 110 (darmstadtium), 111 (roentgenium), and 112 (copernicium) with research partner Gottfried Münzenberg.
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Rhenium
Rhenium is a chemical element with symbol Re and atomic number 75.
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Spontaneous fission
Spontaneous fission (SF) is a form of radioactive decay that is found only in very heavy chemical elements.
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Technetium
Technetium is a chemical element with symbol Tc and atomic number 43.
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Thorianite
Thorianite is a rare thorium oxide mineral, ThO2.
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Walter Noddack
Walter Noddack (17 August 1893 in Berlin – 7 December 1960 in Berlin) was a German chemist.
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References
[1] https://en.wikipedia.org/wiki/Group_7_element
