Question

What is the mass of neutrons?

Answer 1

The mass of a neutron is SLIGHTLY greater than the mass of a proton.

Explanation:

This site reports that the protonic mass is `1.672621898(21)xx10^-27 *kg.`

The mass of a neutron is `1.674927471(21)xx10^(−27)* kg`.

These are equal masses to a first approximation.