Which subatomic particle has the smallest mass

The subatomic particle that has the smallest mass is electrons

Explanation

Atom has three sub particles, that is neutron. protons and electrons. Electrons has the smallest mass since it has a mass of 9.11 x10 ⁻³¹kg

Both neutrons and protons has the same mass, that is the mass of 1.67 x 10⁻²⁷ kg since 9.11 x 10⁻³¹kg is small than 1.67 x 10⁻²⁷kg electrons has the smallest mass