Question

How many valency of the elements are in the halogen group?

Answer 1

here is ans

Nonmetal in group 17 of the periodic table that has seven valence electrons and is highly reactive . Valency is the combining capacity of an element. Elements of group 1 and group 17, both are univalent (both have valency 1).

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Answer 2

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Halogen group 17 has 1 as valency.