Faster access than browser!
41 relations: Alpha decay, Alpha particle, Atom, Atomic mass, Atomic nucleus, Atomic number, Baryon, Baryon number, Beta decay, Binding energy, Bromine, Carbon, Carbon-12, Carbon-14, Chemical element, Electron, Gamma ray, Ion, Isotope, Isotopes of bromine, Isotopes of chlorine, Isotopes of nitrogen, Isotopes of thorium, Mass excess, Mass–energy equivalence, Metastability, Mole (unit), Neutrino, Neutron, Neutron number, Nuclear binding energy, Nuclear isomer, Nucleon, Proton, Radioactive decay, Radioactive displacement law of Fajans and Soddy, Relative atomic mass, Standard atomic weight, Subscript and superscript, Unified atomic mass unit, Uranium-238.
Alpha decay
Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or 'decays' into an atom with a mass number that is reduced by four and an atomic number that is reduced by two.
New!!: Mass number and Alpha decay · See more »
Alpha particle
Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus.
New!!: Mass number and Alpha particle · See more »
Atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
New!!: Mass number and Atom · See more »
Atomic mass
The atomic mass (ma) is the mass of an atom.
New!!: Mass number and Atomic mass · See more »
Atomic nucleus
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
New!!: Mass number and Atomic nucleus · See more »
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.
New!!: Mass number and Atomic number · See more »
Baryon
A baryon is a composite subatomic particle made up of three quarks (a triquark, as distinct from mesons, which are composed of one quark and one antiquark).
New!!: Mass number and Baryon · See more »
Baryon number
In particle physics, the baryon number is a strictly conserved additive quantum number of a system.
New!!: Mass number and Baryon number · See more »
Beta decay
In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which a beta ray (fast energetic electron or positron) and a neutrino are emitted from an atomic nucleus.
New!!: Mass number and Beta decay · See more »
Binding energy
Binding energy (also called separation energy) is the minimum energy required to disassemble a system of particles into separate parts.
New!!: Mass number and Binding energy · See more »
Bromine
Bromine is a chemical element with symbol Br and atomic number 35.
New!!: Mass number and Bromine · See more »
Carbon
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
New!!: Mass number and Carbon · See more »
Carbon-12
Carbon-12 is the more abundant of the two stable isotopes of carbon (Carbon-13 being the other), amounting to 98.93% of the element carbon; its abundance is due to the triple-alpha process by which it is created in stars.
New!!: Mass number and Carbon-12 · See more »
Carbon-14
Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.
New!!: Mass number and Carbon-14 · See more »
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).
New!!: Mass number and Chemical element · See more »
Electron
The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.
New!!: Mass number and Electron · See more »
Gamma ray
A gamma ray or gamma radiation (symbol γ or \gamma), is penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.
New!!: Mass number and Gamma ray · See more »
Ion
An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).
New!!: Mass number and Ion · See more »
Isotope
Isotopes are variants of a particular chemical element which differ in neutron number.
New!!: Mass number and Isotope · See more »
Isotopes of bromine
Bromine (35Br) has two stable isotopes, 79Br and 81Br, and 30 known radioisotopes, the most stable of which is 77Br, with a half-life of 57.036 hours.
New!!: Mass number and Isotopes of bromine · See more »
Isotopes of chlorine
Chlorine (17Cl) has 24 isotopes with mass numbers ranging from 28Cl to 51Cl and 2 isomers (34mCl and 38mCl).
New!!: Mass number and Isotopes of chlorine · See more »
Isotopes of nitrogen
Natural nitrogen (7N) consists of two stable isotopes, nitrogen-14, which makes up the vast majority of naturally occurring nitrogen, and nitrogen-15, which is less common.
New!!: Mass number and Isotopes of nitrogen · See more »
Isotopes of thorium
Although thorium (90Th) has 6 naturally occurring isotopes, none of these isotopes are stable; however, one isotope, 232Th, is relatively stable, with a half-life of 1.405×1010 years, considerably longer than the age of the Earth, and even slightly longer than the generally accepted age of the universe.
New!!: Mass number and Isotopes of thorium · See more »
Mass excess
The mass excess of a nuclide is the difference between its actual mass and its mass number in atomic mass units.
New!!: Mass number and Mass excess · See more »
Mass–energy equivalence
In physics, mass–energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein's famous formula: E.
New!!: Mass number and Mass–energy equivalence · See more »
Metastability
In physics, metastability is a stable state of a dynamical system other than the system's state of least energy.
New!!: Mass number and Metastability · See more »
Mole (unit)
The mole, symbol mol, is the SI unit of amount of substance.
New!!: Mass number and Mole (unit) · See more »
Neutrino
A neutrino (denoted by the Greek letter ν) is a fermion (an elementary particle with half-integer spin) that interacts only via the weak subatomic force and gravity.
New!!: Mass number and Neutrino · See more »
Neutron
| magnetic_moment.
New!!: Mass number and Neutron · See more »
Neutron number
The neutron number, symbol N, is the number of neutrons in a nuclide.
New!!: Mass number and Neutron number · See more »
Nuclear binding energy
Nuclear binding energy is the minimum energy that would be required to disassemble the nucleus of an atom into its component parts.
New!!: Mass number and Nuclear binding energy · See more »
Nuclear isomer
A nuclear isomer is a metastable state of an atomic nucleus caused by the excitation of one or more of its nucleons (protons or neutrons).
New!!: Mass number and Nuclear isomer · See more »
Nucleon
In chemistry and physics, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus.
New!!: Mass number and Nucleon · See more »
Proton
| magnetic_moment.
New!!: Mass number and Proton · See more »
Radioactive decay
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
New!!: Mass number and Radioactive decay · See more »
Radioactive displacement law of Fajans and Soddy
The law of radioactive displacements, also known as Fajans and Soddy law, in radiochemistry and nuclear physics, is a rule governing the transmutation of elements during radioactive decay.
New!!: Mass number and Radioactive displacement law of Fajans and Soddy · See more »
Relative atomic mass
Relative atomic mass (symbol: A) or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to one unified atomic mass unit.
New!!: Mass number and Relative atomic mass · See more »
Standard atomic weight
The standard atomic weight (Ar, standard, a relative atomic mass) is the atomic weight (Ar) of a chemical element, as appearing and met in the earthly environment.
New!!: Mass number and Standard atomic weight · See more »
Subscript and superscript
A subscript or superscript is a character (number, letter or symbol) that is (respectively) set slightly below or above the normal line of type.
New!!: Mass number and Subscript and superscript · See more »
Unified atomic mass unit
The unified atomic mass unit or dalton (symbol: u, or Da) is a standard unit of mass that quantifies mass on an atomic or molecular scale (atomic mass).
New!!: Mass number and Unified atomic mass unit · See more »
Uranium-238
Uranium-238 (238U or U-238) is the most common isotope of uranium found in nature, with a relative abundance of 99%.
New!!: Mass number and Uranium-238 · See more »
Redirects here:
Atomic Mass Number, Atomic mass number, Mass Number, Nucleon number.
References
[1] https://en.wikipedia.org/wiki/Mass_number
