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What do group numbers on the periodic table identify?
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What do group numbers on the periodic table identify?

User Yacine Filali
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The group number is an identifier used to describe the column of the standard periodic table in which the element appears. Groups 1-2 termed s-block elements. Groups 1-2 (except hydrogen) and 13-18 are termed main group elements.
User Abevieiramota
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valence electrons

which is an outer shell electron

User Prabhaker A
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