Question

Electronegativity does not depend on the hybridized state.

• A. True
• B. False

Answer 1

The correct option is B

False

Electronegativity increases as s-character increases. But why is that?
Lets see.
Hybridized state: The penetration of the s-electrons in the nuclues is higher than that of p-electrons. Therefore, if an atom has hybrid orbitals with greater $s^{-}$ character the electronic charge in such orbitals will remain closer to the nucleus of that atom. Thus, electonegativity of such an atom will be higher.

For example:
$C{H}_4$ ${sp}^3$ $25\%$ s - character
$C_2{H}_4$ ${sp}^2$ $33\%$ s - character
$C_2{H}_2$ sp $50\%$ s - character

Here, $C_2{H}_2$ will have the highest electronegativity.