The electronic configuration of an element is 2,7. What is its valency?
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hi i don't know the answers
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but thx for the pionts
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Answer: Valency = 1
Explanation:
The electronic configuration of chlorine can be written as 2, 8, 7. 2, 8, 7 electrons are distributed in the shells K, L, M respectively. Therefore, valence electron in chlorine is 7 and it needs to gain 1 electron from the outermost orbit to attain octet. Hence, the valency of chlorine is 1
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