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4.主要化学元素、相对原子质量及密度

元素名称化学符号相对原子质量密度/(g/cm3)元素名称化学符号相对原子质量密度/(g/cm3)银Ag107.8810.5铬Cr52.017.19铝Al26.972.7铜Cu63.548.93砷As74.915.73氟F19.001.11金Au197.219.3铁Fe55.857.87硼B10.822.3锗Ge72.605.36钡Ba137.363.5汞Hg200.6113.6铍Be9.021.9碘I126.924.93铋Bi209.009.8铱Ir193.122.4溴Br79.9163.12钾K39.0960.86碳C12.011.9~2.3镁Mg24.321.74钙Ca40.081.55锰Mn54.937.3铌Nb92.918.6钼Mo95.9510.2镉Cd112.4... (本文共662字) 阅读全文>>