氢 H 1.007 94碳 C 12.0107氮 N 14.006 7氧 O 15.999 4钠 Na 22.989 769 28镁 Mg 24.305 0铝 Al 26.981 538 6磷 P 30.973 762硫 S 32.065氯 Cl 35.453钾 K 39.098 3钙 Ca 40.078