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Which of the following is true for the s...

Which of the following is true for the species having `3d^(4)` configuration?
(A) `Cr^(2+)` is reducing in nature.
(B) `Mn^(3+)` is oxidising in nature.
(C) Both (A) and (B)
(D) None of these

A

`Cr^(2+)` is reducing in nature.

B

`Mn^(3+)` is oxidising in nature.

C

Both A and B

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
C
`Cr^(2+)` is reducing as its configuration changes from `d^(4)` to `d^(3)`, the latter having a half-filled `t_(2g)^(3)` energy level of 3d orbitals in octahedral crystal field spliting. On the toher hand, the change from `Mn^(3+)` to `Mn^(2+)` therefore (C) is correct.
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