groups in the periodic table
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group names
group 1: Alkali Metals
group 2: Alkali Earth Metals
group 17: Halogens
group 18: Noble gases
group number that applies to the groups below
Oxygen group : 16 Boron group : 13
Carbon group : 14 Nitrogen group : 15
what do we call a row on the Periodic Table?
Periods
what do the elements in a row have in common?
Energy levels