On the basis of data given below,
`E_(Sc^(3+)//Sc^(2+))^(@)=-0.37V,E_(Mn^(3+)//Mn^(2+))^(@)=+1.57V`
`E_(Cr^(2+)//Cr)^(@)=-0.90V,E_(Cu^(2+)//Cu)^(@)=0.34V`
which of the following statements is incorrect?

Options

A. `Sc^(3+)` has good stability due to `[Ar]3d^(0)4s^(0)` configuration
B. `Mn^(3+)` is more stable than `Mn^(2+)`
C. `Cr^(2+)` is reducing in nature.
D. Copper does not give `H_(2)` on reaction wwith dil `H_(2)SO_(4)`

Answer

B

Explanation

`Mn^(2+)(d^(5))`1 is more stable than `Mn^(3+)(d^(4))`,, thus `E_(Mn^(3+)//Mn^(2+))^(@)=+ve`