Question

Which one of the following does not have sp² hybridized
carbon ?
(a) Acetonitrile (b) Acetic acid
(c) Acetone (d) Acetamide

Answer 1

Answer:

a.acetonitrile

Explanation:

The tetrahedral geometry at the terminal carbon atom requires it to be sp3 hybridized. The central carbon, with only two adjacent bonded atoms, must have a linear geometry, which requires sp hybridization, leaving two p orbitals to form pi bonds to the adjacent nitrogen atom, which must also be sp hybridized.

Answer 2

Acetonitrile does not have sp² hybridized carbon due to the following reasons :

- Acetonitrile consists of only one bond in it's structure.

- The structure of compound is CH3-C which is definitely a triple bond formation and the structure hereby clearly states that it's not sp² hybridized.

- There is a presence of pi bond in it's structure which never allows the rotation around double bond.