Revision as of 11:10, 6 December 2022 by alpha>Sarika(Created page with "{{#switch:{{{symbol|}}} <!--- Period 1 ---> | H=[[{{{prefix|}}}hydrogen{{{suffix|}}}|{{{label|H}}}]] | He=[[{{{prefix|}}}helium{{{suffix|}}}|{{{label|He}}}]] <!--- Period 2 -...")