Question

are elements having same atomic number but different mass number.

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

Answer 1

The correct option is C Isotopes

Isotopes are variants of a particular element with same atomic number but different mass number.
Atomic number (Z) of an element is the number of protons found in the nucleus of an atom.
Mass number (A) of an element is the total number of protons and neutrons (together known as nucleons) present inside the nucleus of that element.