Question

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meaning of isotopic numbers a d isodiaphers​

Answer 1

Answer:

Isodiaphers are sets of nuclides which may have different numbers of protons or neutrons, but have the same difference between the number of protons and neutrons i.e. neutron excess. For example Thorium-234 and Uranium-238 are isodiaphers.

Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number.

Definition of isotopic number

: the number of neutrons minus the number of protons in an atomic nucleus