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`.

Explanation

Let the electronegativity of carbon br `chi_(C )`.
Applying Pauling's equation.
`chi_(C )-chi_(H) = 0.208[E_(c-H)-(E_(C-C )xxE_(H-H))^(1//2)]^(1//2)`
`chi_(C )-2.1 = 0.208 [98.8 - (83.1 xx 104.2)^(1//2)]^(1//2)`
`chi = 2.59`