問題詳情
下列各組化合物中，畫線元素的氧化數，何者依序為＋6，＋5，＋4，＋3，＋2，＋1？
(A) Na2HPO4，KClO3，MnO2Al2O3，H2SO4，HCN
(B) K2Cr2O7，Na2HPO4，SO2，Al2O3，Ca(NO3)2，Hg2Cl2
(C) KClO3，K2Cr2O7，SO3，HNO3，Ca(OH)2Hg2Cl2
(D) K2CrO4，H3PO4，MnO2，K3[ Fe (CN)6]，Ba (OH)2，NaH。
(A) Na2HPO4，KClO3，MnO2Al2O3，H2SO4，HCN
(B) K2Cr2O7，Na2HPO4，SO2，Al2O3，Ca(NO3)2，Hg2Cl2
(C) KClO3，K2Cr2O7，SO3，HNO3，Ca(OH)2Hg2Cl2
(D) K2CrO4，H3PO4，MnO2，K3[ Fe (CN)6]，Ba (OH)2，NaH。
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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