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The ionic resonance energy of C-H bond i...

The ionic resonance energy of `C-H` bond is `~~ 6.0kcal mol^(-1)`. The `EN` of `H` is `2.1`. Calculate `EN` of carbon ? Given : `Delta_(C-H) ~~ 6.0 kcal mol^(-1)`

Text Solution

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`(chi_(C) - chi_(H)) = 0.208 [E_(A-B) - sqrt(E_(A-A) xx E_(B-B))]^((1)/(2))`
`= 0.208 xx (Delta_(C - H))^((1)/(2))`
`= 0.208 xx (6.0)^((1)/(2)) = 0.208 xx 2.5 = 0.52`
`chi_(C) - chi_(H) = 0.52`
`:. chi_(C) = 0.52 + 2.1 = 2.62`
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