Question

In which of the following compounds, manganese shows maximum radius ?

• A. MnO2
• B. KMnO4
• C. MnO
• D. K3[Mn(CN)6]

Answer 1

Answer: (C)

MnO

Answer 2

Mn is in +2 oxidation state in MnO while in other

compounds, it is in higher oxidation state. As number of

electrons per proton decreases, the size decreases.