Linked from
The 6 pages that link to Manganese(II), each with the reason it gives.
PermanganateCompared with: It is a common reduced endpoint of permanganate in acidic solution.
Manganese(II) carbonateRelated: This oxidation state balances the carbonate ion's −2 charge.
Manganese(II) oxideBroader topic: MnO contains manganese in this oxidation state.
Sodium oxalateRelated: Its formation creates the autocatalytic effect during oxalate oxidation.