Which of the folowing undergoes disproportionation?

Options

A. `Ba^(2+)`
B. `Ba^(o+)`
C. `BaH_(2)`
D. `BaSO_(4)`

Answer

B

Explanation

`2Ba^(o+)rarrBa^(2+)+Ba`
Due to less stability of `overset(o+)(Ba)`, it undergoes disproportionation.