halogens - found in group 17, have 7 electrons in their outer energy level, noble gases - found in group 18, with a full outer shell, stable, metalloids - have properties of metals and non metals, found along the stair step line, transition elements - located on the periodic table between groups 3-12 and periods 4-7, 1 or 2 electrons in outer energy level, non metals - 5 or more electrons in outer energy level, toward right side of periodic table, poor conductors, metals - located on the left side of periodic table, good conductors of heat & electricity,

Element Groups

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