Question

electrons protons and neutrons

Answer 1

Please elaborate your question
Electron are those particles which have negative charge on them
Protons are those particles which have positive charge on them
Neutron are those particles which have no charge on them
Electrons has charge of 1.67×10^-19C
For calculating atomic mass we add number of neutron and number of proton of an element

Answer 2

electron are those which contain negative charge , proton are those which contain positive charge and neutron are those which contain 0 (zero) charge