Question

Why are atoms electrically neutral?

Answer 1

Atoms are neutral because they have the same number of protons and electrons.
Protons are positive, electrons are negative, and they cancel each other out.
So the atom ends up with no overall charge.

Answer 2

they contain an equal number of positively charged protons and negatively charged electrons

Answer 3

Atoms are electrically neutral because they contain an equal number of positively charged protons and negatively charged electrons, causing their charges to perfectly balance and cancel out, resulting in a net charge of zero. If this balance is disrupted (by gaining or losing electrons), the atom becomes an ion, gaining a positive or negative charge.