Question

what is valency of cobalt

Answer 1

The valency is the number of the electrons that an atom gains , loses or even shares during a chemical reaction , The valency is the number of electrons that an atom needs to gain or lose on order to achieve noble gas electronic configuration ,

The chemical reaction , the atoms try to reach the stable state by losing their outermost electrons ( as in case of the metals ) or by sharing a number of electrons with other atoms ( as in case of nonmetals ) .



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Answer 2

valency of cobalt is 2 because it loose 2 electron