63. What is the valence electron configuration of S?
(A) 1s2 2s2 2p6
(B) 1s2 2s2 2p6 3s1 3p5
(C) 4s2 4p4
(D) 3s2 3p4

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統計: A(0), B(3), C(0), D(4), E(0) #2319880