更新1:
sorry the question number should be 27 !!
06 chem mc26
回答 (1)
2015-01-13 2:12 am
✔ 最佳答案
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(1)
O.N. of Cl decreases from +5 to -1;
O.N. of O increases from -2 to 0.
(2)
O.N. of Pb in:
Pb(s) = 0
PbO2 = +4
PbSO4 = +2
(3)
O.N. of O increases decreases from -1 to -2;
O.N. of I increases from -1 to 0.
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150111000051KK00031