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The number of d-electrons retained in Fe...

The number of d-electrons retained in `Fe^(2+)` (At. No. Fe=26)` ions are:

A

`3`

B

`4`

C

`5`

D

`6`

Text Solution

Verified by Experts

The correct Answer is:
4
`Fe_(26)-[Ar]3d^(6)4s^(2)`
`Fe^(2+)_(24"electrons")-[Ar]3d^(6)4s^(0)`
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-3 PART-II
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  10. Lanthanoid contraction is caused due to:

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