1.

Write the the electronic configuration of Fe^(2+) ion.

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

ANSWER :A


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