Question

what is the valency of element of atomic number 35​

Answer 1

Answer:

2 is the correct answer

Explanation:

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Answer 2

Answer:

valency is equal to the valence electrons i. e., electrons on the outermost shell of an atom

so, first of all,we need to find the electronic configuration of the atom.

1st shell:2electrons

2nd shell:8electrons

3rd shell:8 electrons

4th shell:8 electrons

5th shell:8 electrons

6th shell:1 electron

so, valency =valence electron=1