Question

Elements belonging to the same group have the same valency

Answer 1

Yes elements belonging to same group have same valency

Answer 2

Q. Give Scientific Reason

1.] Elements belonging to the same group have the same valency.

➙① The Valency of an element is determined by the numbers of valence electron in the outermost shell of an atom of an element.

②All the elements in a group have the same number of valence electrons. Therefore, element's in the same group should have same valency.

For example :-

The elements of group I contain only one valence electron ; the valency of elements of the group I is one. Similarly , For group II the valency is two .

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