# How are the negative fluoride ions formed from fluorine atoms?

Fluorine is the most reactive element on the Periodic Table, and will even oxidize oxygen to form $O {F}_{2}$.
$\frac{1}{2} {F}_{2} + {e}^{-} \rightarrow {F}^{-}$ ${E}^{\circ} = 2.87$ $V$