# What is the term for an atom that has lost or gained electrons (it's no longer neutral)?

$\text{An ion...............}$
Negative ions, $\text{anions}$, are typically formed by non-metals, i.e. typically these are atoms with high nuclear charge, such as fluorine and oxygen. Positive ions, $\text{cations}$, are typically formed by metals, which are electron-rich, reducing species.