Question

What is isotopes?????​

Answer 1

Explanation:

Atoms having same atomic number but different mass number is called isotopes!!

Answer 2

$\textbf{Isotopes}$:

Isotopes of an element have the same atomic number but different atomic masses.

For example, isotopes of Hydrogen are

Prortium : Z = 1 ,A =1

Deuterium : Z = 1,A = 2

Tritium : Z = 1 ,A = 3