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Calculate electronegativity of carbon at Pauling scale Given that :
` E_(H-H) =104 .2 kcal "mol"^(-1) E_(C-C) =83.1 kcal "mol"^(-1)` ,
`E_(C-H) =98.8 kcal "mol"^(-1)`.
Electronegativity of hydrogen `=2.1`.

A

`0.498`

B

`0.598`

C

`2.134`

D

`2.597`

Text Solution

Verified by Experts

`X_(C )-X_(H)=0.208 sqrt(Delta)`
where, `Delta = E_(C-H)-sqrt(E_(C-C)xxE_(H-H))`
`Delta = 98.8-sqrt(83.1xx104.2)`
`therefore Delta = 5.75`
`X_(C )-2.1=0.208 sqrt(5.75)`
`X_(C )-2.1=0.497`
`X_(C )=2.597`
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