What is the actual mass of a proton?

Proton:

1. A positively charged particle in the nucleus of an atom is known as a proton.
2. A proton carries one unit of positive charge. Thus, the relative charge of a proton is $+1$.
3. The actual mass of a proton is $1.6\times {10}^{-24}\mathrm{g}$.
4. The mass of proton is equal to the mass of one Hydrogen atom $\mathbf{\left(}\mathbf{H}\mathbf{\right)}$ i.e. $1\mathrm{u}$ as the nucleus of Hydrogen atom contains only one proton.

Thus, the actual mass of a proton is $1.6\times {10}^{-24}\mathrm{g}$.