Synonym for atomic mass. Atomic weight is the relative mass of an atom of the given element compared to the mass of carbon-12. More about atomic weight...
The average mass number of a particular element; the mass (in grams) of Avagadros number of atoms of an element.
The atomic weight of an atom is a measure of how much mass an atom has. The atomic weight is calculated by adding the number of protons and neutrons together. Atomic masses are not listed as whole numbers on the periodic table because atoms can come in forms with different amounts of neutrons. The atomic weight reported for any particular element is an average weight of all the known forms of that element.
The number of protons and neutrons in an atom, averaged over the abundances of the different isotopes.
The sum of the protons and neutrons in the nucleus of an atom.
The weighted average of the atomic masses of the different isotopes of an element. A single 12C atom, for example, has a mass of 12 amu, but naturally occurring carbon also contains a 1.1% 13C. The atomic weight of carbon is therefore 12.011 amu.
The average weight of an atom.
The weighted average of the atomic masses of an element's isotopes based on their relative abundance.
(chemistry) the ratio of the atomic mass of an element to half the atomic mass of carbon-12
the mass of an atom, expressed in atomic mass units. For example, the atomic number of helium-4 is 2, the atomic mass is 4, and the atomic weight is 4.00026.
The sum of the weights of an atom's protons and neutrons, the atomic weight differs between isotopes of the same element.
The atomic mass of an atom relative to 1/12 of the mass of the Carbon-12 isotope.
atomic mass. The average mass of an atom of an element, usually expressed in atomic mass units. The terms mass and weight are used interchangeably in this case. The atomic weight given on the periodic table is a weighted average of isotopic masses found in a typical terrestrial sample of the element.
Dalton's law heat mass number radioactive decay unimolecular reaction
Weight of an atom of an element relative to the weight of an atom of carbon (12C), which has been assigned the value of 12.
The atomic weight of an element is the weight of its atom on a scale which the carbon atom of mass weight number weighs exactly 12.000 units.
The mean mass of an atom of a particular element in atomic mass units.
The nominal atomic weight of an isotope is given by the sum of the number of neutrons and protons in each nucleus. The exact atomic weight differs fractionally from that whole number because neutrons are slightly heavier than protons and the mass of the nucleus is also affected by the binding energy.
The weight of a single atom of any given chemical element; it is usually taken as the weighted average of the weights of the naturally occurring nuclides, expressed in atomic mass units.
As listed on the periodic table, the atomic weight is a weighted average of the masses of stable isotopes of an element that occur in nature. Given in grams, the atomic weight is the weight of one mole of atoms of an element. Atomic weight is often used interchangeably with atomic mass.
The weighted mean of the masses of the neutral atoms of an element expressed in atomic mass units.
the relative weight of an atom
The total number of protons and neutrons in the nucleus of an atom.
Roughly, the average total number of protons and neutrons in the atoms of a particular element.
The average weight (or mass) of all the isotopes of an element, as determined from the proportions in which they are present in a given element, compared with the mass of the 12 isotope of carbon (taken as precisely 12.000), that is the official international standard; measured in daltons.