Define isotopes.

1.	Define isotopes.
Answer» Isotopes\tAtoms of the same element differing in the number of neutrons in their nuclei are known as isotopes. Thus, isotopes of an element have the same atomic number but different atomic mass numbers.\tIsotopes are identified by their mass numbers.\tFor example, the isotopes of carbon are referred to as carbon-12, carbon-13 and carbon-14. Atom of the same element having same atomic no.but different in mass no.

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