r2 vs r3
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12주기}}}}}} || 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || 11 || 12 || 13 || 14 || 15 || 16 || 17 || 18 ||
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1313|| 1 || [[수소|{{{#000,#E0E0E0 {{{-4 {{{#!wiki style="display: inline-block; margin: 5px 0px; padding: 1px 2px; border-radius: 4px; width: 30px; border-style: solid; border-width: 1px; border-color: green;"
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384384 * 원소의 종류에 따른 분류
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