Isotope, Isobar and Isotone

1. Isotope: Atoms or ions of an element with different numbers of neutrons in their atomic nucleus. Isotopes have the same atomic number but different mass number. Isotopes have very similar chemical properties but sometimes differ greatly in nuclear stability.



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2. Isobar: Nuclides that have the same isotopic mass but different atomic number. 

3. Isotone: A group of atoms or ions with nuclei that contain the same number of neutrons but different numbers of protons. 



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