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Group 1
alkali metals, +1
Group 2
alkaline earth metals, +2
Groups 3-12
transition metals, no #
Group 13
boron family, +3
Group 14
Carbon Family, -4 or +4
Group 15
Nitrogen Family, -3
Group 16
Oxygen Family, -2
Group 17
Halogens, -1
Group 18
noble gases, 0