You are given the electronic configuration of five neutral atoms A, B, C, D, and E. A – 1s2, 2s2 2p6 3s2; B = 1s2, 2s2 2p6, 3s1 C = 1s2, 2s2 2p1; D = 1s2, 2s2 2p5, E = 1s2, 2s2 2p6. Write the empirical formula for the substance containing (i) A and D,
AD2
