# Why is the common oxidation state of the aqueous ions of Fe, Mn, and Zn +2?

## I know they are all transition metals, but I'm not completely sure how it determines oxidation state.

Well, these metals commonly (but not exclusively) form bivalent ions, ${M}^{2 +}$.......
$F {e}^{2 +} , M {n}^{2 +}$, and $Z {n}^{2 +}$ are common aqueous ions.........