Thus
the highest Mn fluoride is MnF4 whereas the highest oxide is Mn2O7 The ability of oxygen to form multiple bonds to metals explains its
superiority In the covalent oxide Mn2O7, each Mn is tetrahedrally
surrounded by O’s including a Mn–O–Mn bridge The tetrahedral [MO4]
n-
ions are known for V
V, Cr
Vl, Mn
V, Mn
Vl and Mn
VII