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17.元素甲和元素乙的原子最外層電子殼上分別有四個及七個電子,當元素甲和元素乙化合時,生成的化合物丙的化學式如何寫最適當? (A)甲4乙 (B)甲乙4 (C)甲4乙7 (D)甲7乙4。
問題詳情
17.元素甲和元素乙的原子最外層電子殼上分別有四個及七個電子,當元素甲和元素乙化合時,生成的化合物丙的化學式如何寫最適當?
(A)甲4乙
(B)甲乙4
(C)甲4乙7
(D)甲7乙4。
參考答案
答案:B
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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