1.

Electronic configuration of Ferrous ion is

Answer»

`1s^(2)2s^(2)2P^(6)3s^(2)3P^(6)3d^(6)4s^(0)`
`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6)4s^(2)`
`1^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)4s^(1)`
`1s^(2)2s^(2)2p^(6)2p^(6)3s^(2)3p^(6)3d^(5)4s^(0)`

Answer :A


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