Question

How do ions form electrically neutral compounds?

Answer 1

Electrically neutral compounds mean compounds with no net charge on them or $0$ charge on them.

Ions form electrically neutral compounds by balancing the charge on the individual ions.

A cation combines with an anion to form a neutral compound. For example - $N{a}^{+}$ combines with $C{l}^{-}$ to form $NaCl$. $C{a}^{2+}$ combines with $C{O}_3^{2-}$ to form $CaC{O}_3$, and various other such examples are there.