Question

why valency of elements in same present in same group ?? ​

Answer 1

Answer:

The valency of an element is determined by the number of valence electrons in the outermost shell of an atom of an element. All the elements in a group have the same number of valence electrons. Therefore, elements in the same group should have the same valency.

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Answer 2

Explanation:

(1) The valency of an element is determined by the number of valence electron in the outermost shell of an atom of an element. (2) All the elements in a group have the same number of valence electrons. Therefore, elements in the same group should have the same valency.

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