Input interpretation
period 2 elements | group
Summary
1 | 2 | 13 | 14 | 15 | 16 | 17 | 18
Group rankings
1 | lithium | 1 2 | beryllium | 2 3 | boron | 13 4 | carbon | 14 5 | nitrogen | 15 6 | oxygen | 16 7 | fluorine | 17 8 | neon | 18