1 2 13 14 15 16 IA 1; H; 氢; 1.008 IIA IIIA IVA VA VIA 3Li; 锂; 6.941 4; Be; 铍; 9.012 5; B; 硼; 10.81 6; C; 碳; 12.01 7; N; 氮; 14.01 8; O; 氧; 16.00
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