Question

How many electrons does the iron ion have when it forms the ionic compound `FeCl_3`?

Answer 1

`Fe^(3+)` has `"5 d electrons"`

Explanation:

The iron atom has 26 electrons in total; it must have if `Z=26`; why `"must?"` And thus upon oxidation.......

`FerarrFe^(3+) + 3e^-`

....the resultant ion has 23 electrons........