Question

Where did the 3 ionized electrons in Fe₃ come from?

Answer 1

The 3 ionized electrons in Fe₃ come from the 4s orbital and one of the 3d orbitals of iron.

Step-by-step explanation:

In the case of Fe³+, the three ionized electrons come from the 4s orbital and one of the 3d orbitals of iron. When iron forms an Fe³+ ion, it loses the 4s electrons and one of the 3d electrons, resulting in the electron configuration 1s²2s²2p 3s²3p63d5.