Addison122809 Addison122809 15-01-2016 Chemistry contestada Which electron configuration represents an atom of sodium and why? A. 1s2 2s2 2p6 3s1 B.1s1 2s2 2p6 3s2 C. 1s2 2p6 3s2 3p1 D. 1s2 2s2 2p6 4s1