# Particles having a net negative charge are called what?

Ions with a negative charge are called anions. Some common anions include sulfate $\left(S {O}_{4}^{2 -}\right)$, nitrate $\left(N {O}_{3}^{-}\right)$, and chloride $\left(C {l}^{-}\right)$. This happens when there are more electrons in the ion than protons.