Question

Which of the following are true in case of isobars?

• A. They have same atomic number.
• B. They have same number of protons.
• C. They have same number of nucleons.
• D. They have same number of neutrons.

Answer 1

The correct option is C

They have same number of nucleons.

Isobars have same number of nucleons i.e. total sum protons and neutrons is same. The individual count of protons and neutrons are different in isobars. They have nearly same atomic mass because of same mass number (nucleons).