Question

Atomic number of chlorine is 17. write number of valence electrons and valency of chlorine​

Answer 1

Chlorine has 7 valence electrons in its outermost shell. It can loose or gain electrons to complete it's valency.

It is difficult to loose 7 electrons so, chlorine gains 1 electron and complete its valency.

Hence its valency is -1.

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Answer 2

Answer: The atomic number of chlorine is 17. So it has 7 valance electrons in outermost shells . To complete the octet it is difficult of lose 7 electron . So it gain 1 electron to complete its octet . So the valancy of chlorine is -1.

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