Question

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

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

Answer 1

The correct option is D $sp$

The pair of an electron in the $C{H}_3-C\equiv C^{-}$ present at $\equiv C^{-}$ carbon which has $1\sigma$ bond pair and two pie bonds and $1$ lone pair of electrons. Thus it is $sp$ hybridized and the pair of electron in the given carbanion is present in the $sp$ orbital.