Question

Electrons do not have a definite mass.

• A. True
• B. False

Answer 1

The correct option is B False

On basis of JJ Thomson Properties of electron

1. Electrons have a definite mass and a definite electric charge.
2. The nature of the electron depends on the nature of the gas used in the discharge tube and the material of the cathode.
3. Electrons have a negligible mass that is $9.1\times {10}^{-28}gram$.

Therefore the given statement is false.