# What two particles have approximately the same mass?

The $\text{nucular}$ particles: $\text{protons and neutrons}$.
The nuclear particles, protons and neutrons, are conceived to have a positive electronic charge, and a neutral charge respectively. The protonic mass is 1.672621898(21)xx10^(−27)*kg.
And the neutron mass is 1.674927471(21)xx10^(−27)* kg, so to a first approx. these masses are equal.