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化合价口诀初中顺口溜

更新时间: 2021-03-24 16:35:32     

1、钾钠银氢正一价,钡锌钙镁正二价,一二铜,二三铁,亚铜亚铁是低价,铝是正三氧负二,氯是负一最常见,硫有负二正四六,正二正三铁可变,二三铁,二四碳,单质零价永不变。

2、一价氢锂钾钠银,二价氧钙钡镁锌,三铝四硅五价磷,变价元素记在心,二三铁,二四碳,一七氯,三五氮,二四六硫要分清,铜汞一二也都有,单质元素价为零,负一硝酸氢氧根,负二碳酸硫酸根,负三记住磷酸根,正一价的是铵根。

关键词: 化合价 口诀 初中 顺口溜

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