Abcde是中学化学中常见的五种短�期元素它们在元素�期表中的相对位置如图1.a的最高价氧化物对应的水化物与其氢化物反应生成离子化合 Template




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tomskiabcde是中学化学中常见的五种短�期元素它们在元素�期表中的相对位置如图1.a的最高价氧化物对应的水化物与其氢化物反应生成离子化合 coloring