Asked in Premeth Test 15 — Organic Chemistry Concepts and Hydrocarbons (17 March 2025) 2025Moderate

Which of the following does not have sp2 hybridized orbitals?

Correct answer: B. Acetonitrile

  • A. Acetone
  • B. Acetonitrile
  • C. Acetic acid
  • D. Acetamide

Explanation

Acetonitrile has a carbon-nitrogen triple bond. The carbon atom in the triple bond is sp hybridized, with one sigma bond to nitrogen and two pi bonds to nitrogen.

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About Hybridization

Hybridization explains bonding by combining atomic orbitals to form equivalent hybrid orbitals with definite geometries. Coverage includes sp, sp², sp³, sp³d and sp³d² hybridization, their shapes and bond angles, and the relation of sigma and pi bonds to molecular structure.

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