Question

What is the term given to the atoms of an element with same atomic number but different mass number?

• A. Isotopes
• B. Isobars
• C. Isotones
• D. Isomers

Answer 1

The correct option is A

Isotopes

Isotopes are the atoms of an element with same atomic number (Z) but different mass number (A).

Example: (${}_{17}^{35}\text{Cl}{,}_{17}^{37}\text{Cl}$)