Question

Whichif the reactive intermediates is sp2 hybridized?

A) methyl carbanion

B) dibromocarbene

C) acetylenic carbanion

D) secondary alkyl radical

E) tertiary carbocation

F) none

Answer 1

ANSWER: dibromocarbene, secondary alkyl radical, tertiary carbocation are SP2 hybradized

explanation

a) sp3. Having sp3 hybrized orbitals allows it to have 3 bond pairs and one lone pair.

b) sp2,Bonding in dihalocarbenes is based on sp2 hybridization.the unshaired electron pair occupies an sp2 hybradised orbital in dibromocarbene

c) sp hybradisation

d).SP2 ,A secondary (2°) alkyl radical is an alkyl radical in which the carbon atom bearing the unpaired electron is bonded to two carbon atoms.

E) SP2 , because of the vacant p orbital on carbon. ,In a tertiary (3°) carbocation, the positive carbon atom is attached to three alkyl groups, which may be any combination of same or different.