Question

What is the electron configuration of iron (ii) ion?

Answer 1

Of `Fe^(2+)`......?

Explanation:

For `"iron, "Z=26`. For `Fe^(2+)` we must thus accommodate `26` electons:

`Fe: [Ar]4s^(2)3d^(6)`

`Fe^(2+): [Ar]3d^(6)`

What about `Fe^(3+)`?