Asked in PMC Practice Test 9 (2021) 2021Moderate

Which of the following does not have a sp2 hybridized orbital?

Correct answer: B. Acetonitrile

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

Explanation

The structural formula of molecules is shown. Only acetonitrile is the one that does not have sp2 hybridization while others do contain sp2 hybridization. Hence the answer is B.

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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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