1 H 氢 Hydrogen 2 He 氦 Helium 3 Li 锂 Lithum 4 Be 铍 Beryllium 5 B 硼 Boron 6 C 碳 Carbon 7 N 氮 Nitrogen 8 O 氧 Oxygen 9 F 氟 Fluorine 10 Ne 氖 Neon 11 Na 钠 Sodium 12 Mg 镁 Magnesium 13 Al 铝 Aluminium 14 Si 硅 Silicon 15 P 磷 Phosphorus 16 S 硫 Sulfur 17 Cl 氯 Chlorlne 18 Ar 氩 Argon 19 K 钾 Potassium 20 Ca 钙 Calcium