問題詳情
69.Ionization energies are
(A)always negative
(B)always positive
(C)usually positive but sometimes negative
(D)usually negative but sometimes positive
(E)usually zero
(A)always negative
(B)always positive
(C)usually positive but sometimes negative
(D)usually negative but sometimes positive
(E)usually zero
參考答案
無參考答案
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