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How will you find valency of …

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How will you find valency of chlorine

Posted by Aarti Garg 4 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Neha Passi 4 years, 5 months ago

Atomic number of chlorine is 17 For finding valency, divide the electrons according to the shells K shell= 2[filled using 2n² ( 2*1²) formula where n is the orbit no. or energy index, 1,2,3,4] L shell= 8(2*2² and filled too) M shell= 7(Not filled as there are no more electrons left) It's valency will be 1 using the octet rule which says that in the last shell there should atleast be 8 electrons for the atom to be stable.

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