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Can there be backbonding in 1st option as cl has vacant d orbital and C has lone pair? If yes, then why is it not the most stable as backbonding is preffered over I effect

Can there be backbonding in 1st option as cl has vacant d orbital and C has lone pair? If yes, then why is it not the most stable as backbonding is preffered over I effect

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Grade:11

2 Answers

Arun
25750 Points
4 years ago
Dear student
 
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Arun
Vikas TU
14149 Points
4 years ago
The difference of electronegativity between chlorine and carbon ( 3 for chlorine , 2.5 for carbon) is smaller than between fluorine and carbon (4 for flourine ) , so the bond between chlorine and carbon is much stronger.
 Chlorine has a tendency to attract the pair of electrons in the bond, while flourine draws the pair of electrons right to it and that makes the bond weak and easier to break .

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