Question

Define isotopes.........

Answer 1

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

Answer 2

Answer :-

Isotops of an element have the same number of protons but different number of neutrons i.e. they have same number of atomic number but different mass number.