Compare an electron, a proton, and a neutron in respect of their relative masses and charges.
Electron:
The mass of an electron is 9 × 10−31 kg.
The charge of an electron is (Negative) 1.6 × 10−19Coulomb.
Proton:
The mass of a proton is 1.67 × 10−27 kg or 1 u.
The charge of a proton is (Positive) 1.6 × 10−19 Coulomb.
Neutron:
The mass of a neutron is 1.67 × 10−27kg or 1 u.
Neutron has no charge.