Describe the relative masses of a proton a neutron and an electron what charge if any does each have?

A proton has a mass of about 1 Atomic Mass unit (amu) and carries a positive charge (+1), while a neutron is slightly heavier, also around 1 amu, but has no charge (neutral). In contrast, an electron has a much smaller mass, approximately 1/1836 of a proton's mass, and carries a negative charge (-1). Thus, protons and neutrons are significantly more massive than electrons, with protons being positively charged and neutrons being neutral.