Question

Which of the following is FALSE?

1. The mass of a hydrogen atom is about the same as a proton

2. The mass of a proton is much greater than the mass of an electron

3. The mass of protons and neutrons are about the same

4. The mass of neutrons and electrons are about the same

Answer 1

4. The mass of neutrons and electrons are about the same.
Reason :- Mass of Neutrons (1.6726 × 10^(-27) kg) ≈ Mass of Protons (1.6726219 × 10-27 kg)
Mass of Protons >>> Mass of Electrons
Hence,
Mass of Neutrons >>> Mass of Electrons.