Why do protons and neutrons need to be the same

A neutral atom much have an equal number of protons and electrons if not it would not work.

Explanation: (Have a Pleasurable day mate.)

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.