Question

What are the hybridization of the atoms 1 and 2 respectively in the following structure

Answer 1

CH2=C=CH 2

In propadiene, each of two electrons of the central atom forms collinear sp σ bonds to the terminal sp

2

-hybridized carbons. The two remaining electrons of the central carbon occupy p orbitals and form π bonds through an overlap of these p orbitals and the p orbitals of the terminal carbons.

First carbon shows sp

2

hybridization and second carbon shows sp hybridization.