๐Ÿงชap chemistry review

Anion

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

An anion is an atom or group of atoms that has gained one or more electrons, giving it a negative charge.