njoodh2005 njoodh2005 28-09-2020 Chemistry contestada Which of the following is the correct electron configuration for a ground-state atom of magnesium (atomic number 12) A)1s2 2s2 2p8 B)1s2 2s2 3s2 3p6 C)1s2 2s2 2p6 3s2 D)1s2 2s2 3s4 3p4