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化学
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元素的化合价口诀 (完整的)
钾钠银氢+1价.
.....二三铁,二四碳.....
人气:121 ℃ 时间:2020-02-04 20:52:20
解答
钾钠氢银正一价,钙镁锌钡正二价;
氟氯溴碘负一价,通常氧是负二价;
铜正一正二铝正三,铁有正二和正三;
碳有正二和正四,硫有负二正四和正六
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