The electron configuration of a manganese ion (Z  25) is [Ar]3d ³. What is the charge on this ion? A)(  7) B)(  5) C)(  4) D)(  3) E)(  2)

Question

Quizplus · Accepted Answer

The charge on an ion is determined by the number of electrons it has gained or lost compared to the neutral atom. In this case, we see that the electron configuration of the manganese ion is missing two electrons compared to the neutral manganese atom (which has 25 electrons). Therefore, it has a 2+ charge. The only answer choice that corresponds to a 2+ charge is C, (F1F1F1S1F1F1F104).

The Electron Configuration of a Manganese Ion (Z 