Question

how electronegativity is relation to hybridization of orbitals of carbon
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Answer 1

Electronegative of hybrid orbitals depend upon %of s charater, as Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.Hence more the s character more is the electronegativity. Simply, because sp^2 hybridized carbon has more lower-binding-energy electrons.