関連ワード:
what do the groups have in common periodic table what do all groups have in common periodic table what do vertical groups have in common on the periodic table what do groups families have in common on the periodic table what do groups of elements have in common in the periodic table what do the groups columns on the periodic table have in common what do groups 1 2 and 13 have in common on the periodic table what do groups 15 16 and 17 have in common on the periodic table what do groups 1 2 and 3 have in common on the periodic table what do elements in the same groups of the periodic table have in common
