Question 0The electron configuration of 22X 2+ ion isA.1s2 2s22p6 3s2 3p6 4s2 3d2B.1s2 2s22p6 3s2 3p6 4s2 3d1C.1s2 2s22p6 3s2 3p6D.1s2 2s22p6 3s2 3p6 4s2E.Objective Show full explanation