Compare an electron, a proton, and a neutron in respect of their relative masses and charges.

Electron:

The mass of an electron is 9 $\times$ ${10}^{-31}$ kg.

The charge of an electron is (Negative) 1.6 $\times$ ${10}^{-19}$Coulomb.

Proton:

The mass of a proton is 1.67 $\times$ ${10}^{-27}$ kg or 1 u.

The charge of a proton is (Positive) 1.6 $\times$ ${10}^{-19}$ Coulomb.

Neutron:

The mass of a neutron is 1.67 $\times$ ${10}^{-27}$kg or 1 u.

Neutron has no charge.