Question

The mass of an electron is negligible when compared to that of a proton.

• A. True
• B. False

Answer 1

The correct option is A

True

Atoms have electrons, protons, and neutrons as the fundamental particles. Electrons are negligible in mass $(9.10938356\times {10}^{-31}kg)$ when compared to protons and neutrons. Mass of a proton is $(1.6726219\times {10}^{-27}kg)$, approximately 1837 times that of the electron. The mass of an atom is almost due to its nucleus. Inside the nucleus, there are only protons and neutrons. Electrons revolve around the nucleus.