Question

Question is in the attachment. .

ANSWER SHOULD BE SHORT

Answer 1

ANSWER

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. ... The linguistic meaning of valence derives from the definition of valency in chemistry.


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Answer 2

Valency is a combing power of energy . We know that the last shell is considered as valency shell the no. Of electrons in the valency shell will be the valency