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Which one of the following ions has elec...

Which one of the following ions has electronic configuration `[Ar]3d^(6)` ? `(At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)`

A

`Co^(3+)`

B

`Ni^(3+)`

C

`Mn^(3+)`

D

`Fe^(3+)`

Text Solution

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The correct Answer is:
A
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