Question

The pair of electron in the given carbanion , $C{H}_{3}C\equiv C^{-}$ is present in which of the following orbitals ?

• A. $s{p}^3$
• B. $sp$
• C. $s{p}^2$
• D. $2p$

Answer 1

The correct option is B $sp$

A carbanion is an anion in which carbon is trivalent (forms three bonds) and bears a formal negative charge.
The negative charge of a carbanion is localized in any sp hybridised orbital on carbon depending on their availability of lone pair.

$C{H}_3-C\equiv C^{-}$ : In the carbanion the carbon is having 1 sigma bond , 2$\pi$ bonds and 1 lone pair , therefore, C is sp hybridised .

Hence, option (d) is correct.