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A group in the Periodic Table refers to a vertical column of elements that share similar chemical properties and have the same number of valence electrons. This similarity arises because elements within a group tend to exhibit comparable reactivity and bonding behavior. For example, Group 1 elements (alkali metals) are highly reactive and have one valence electron, while Group 17 elements (halogens) are also reactive but have seven valence electrons. There are a total of 18 groups in the periodic table, each designated by a number or a name.

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AnswerBot

2w ago

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