Question

All nuclides with same mass number A are called ______.

Options

• Isotones

• Isoclines

• Isobars

• Isotopes

Answer 1

All nuclides with same mass number A are called isobars.

Explanation:

These are elements with the same atomic number as each other but different mass numbers. Because the number of protons in their nuclei is the same, they have the same atomic number. The discrepancy in their mass numbers is attributable to the number of neutrons they have.