Question

What is the lightest subatomic particle?

Answer 1

Lightest subatomic particle.

1. An electron, having mass $9.11\times {10}^{-31}\mathrm{kg}$, is the lightest elementary particle.
2. An electron has almost no mass compared to protons and neutrons and acts like both a wave and a particle.
3. An electron, alongside neutrons and protons, is one of the lightest subatomic particles and a key component of atoms.

Hence, the lightest subatomic particle is “Electron”.