Which of the following statement are correct about `Cr^(2+)` (Z = 24) and `Mn^(3+)` (Z = 25) ? (i) `Cr^(2+)` is a reducing agent (ii) `Mn^(3+)` is an oxidizing agent (iii) Both `Cr^(2+)` and `Mn^(3+)` exhibit `d^(4)` configuration (iv) When `Cr^(2+)` is used as a reducing agent, the chromium ion attains `d^(5)` electronic configuration
A
`Cr^(2+)` is a reducing agent
B
`Mn^(3+)` is an oxidising agent
C
both `Cr^(2+)` and `Mn^(3+)` exhibit `d^(4)` electronic configuration
D
when `Cr^(2+)` is used as a reducing agent, the chromium ions attains `d^(5)` electronic configuration.
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A, B, C
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