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It was Truman P. Kohman in 1947, first proposed that individual atomic species
should be called
nuclides
. In this way a nuclide is completely defined by the two
numbers, atomic number Z and neutron number N, whereas an element or chemical
Nomenclature of Nuclei
Nomenclature of nuclei according to Kohman
Term
Description
Nuclides
Z, A
Isotopes
Common Z
element is characterised by its atomic number Z. Kohman’s set of definitions have
been generally adopted and are summarised in following Table:
Isotones
common N = A - Z
Isobars
common A
Isodiapheres
common (N – Z)
Isomers
common Z and A