Multiple choice

Which of the following is the heaviest subatomic particle?

  1. Electron

  2. Proton

  3. Neutron

  4. Photon

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Neutron is the heaviest subatomic particle. Neutron is 1842 times heavier than an electron. Mass of neutron is 1.0086654 a.m.u. or 1.6749 x 10-27 kg.