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The  halogens are located on the left of the noble gases on the periodic table

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This GROUP is also known as the nitrogen group

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are the chemical elements in group 13 of the periodic table,

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a series of metallic elements, included in the rare-earth metals, in Group 3 of the periodic table

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alkaline earth metals are six chemical elements n column (group) 2 of the Periodic table.

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a length or portion of time

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any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (18) of the periodic table

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This group is also known as the oxygen family. It consists of the elements oxygen.

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The carbon group is a periodic table group consisting of carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb)

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actinides series of Metals. There are two rows under the periodic table: the lanthanide and actined series.

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The  transition metals are the metallic elements that serve as a bridge,

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alkali metals are the chemical elements found in Group 1 of the periodic table.

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n chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements