阿摩線上測驗
22. Which of the following is diamagnetic?
(A)N2
(B)
(C)O2
(D)
(E)
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統計： A(1), B(1), C(1), D(0), E(0) #2788670
統計： A(1), B(1), C(1), D(0), E(0) #2788670
