Question

An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having manganese in a higher oxidation state is ______ B.M. (Nearest integer)

Options

• 0

• 1

• 2

• 3

Answer 1

An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having manganese in a higher oxidation state is 0 B.M.

Explanation:

\[\ce{\overset{+6}{M}{n}O^{2-}4 ->[H^+] \overset{+7}{M}{n}O^-_4 + \overset{+4}{M}{n}O2 + H2O}\]

In Mn⁷⁺, there is no unpaired electron.

So, spin only magnetic moment the value of \[\ce{M{n}O^-4}\] is 0.