Question

Nuclei with the same number of protons but different number of neutrons are called . Whereas, nuclei with the same mass number are called .

• A. isobars
• B. isotopes
• C. isotones
• D. isodiaphers

Answer 1

Answer: (A), (B)

The correct options are
A isobars
B isotopes

Nuclei with same number of protons (same atomic number) and different number of neutrons are called Isotopes.

Nuclei with same number of neutrons but different number of protons (different atomic number) are called isotones.

Nuclei with same mass number, that is, same "sum of neutrons and protons" are called isobars.

Nuclides with the same difference in protons and neutrons are termed as isodiaphers.