Question

Atomic species of the same element differing in mass are called:

Options

• Isotopes

• Nucleons

• Isobars

• Isotones

Answer 1

Measurements with a mass spectrometer revealed different types of atoms of the same element having the same chemical properties but different masses. Atomic species of the same element differing in mass are called isotopes; they have the same number of protons but a different number of neutrons.