Question

The electron configuration of a Mn atom is 1s2 2s2 2p6 3s2 3p6 4s2 3d5. Determine the number of unpaired electrons in the Mn atom. Manganese contains unpaired electron(s).

Answer 1

Step-by-step explanation:

it contains 5 unpaired electron in 3d

3d must filled with 10 electrons and there is 5 only