Question

Isotopes of an element have a different number of

• A. Proton
• B. Neutron
• C. Electron
• D. Atom

Hint:

Isotopes \( \rightarrow \) same atomic number, different mass number due to varying neutrons.

Answer 1

The Correct Option is B

Isotopes are atoms of the same element that have the same number of protons (same atomic number) but different numbers of neutrons.
This leads to a different mass number.
Since chemical properties depend on the number of electrons and protons, isotopes behave similarly chemically but differ in mass and certain physical properties.