What are the hybridizations here?

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1 Answer
Ernest Z.
Dec 3, 2016

A. sp2; B. sp3; C. sp2; D. see the image below.

Explanation:

A.

The α carbon has no lone pairs and is directly attached to three atoms.

Its hybridization is sp2.

B.

The β carbon is directly attached to four atoms.

It is sp3 hybridized.

C.

The nitrogen atom is sp2 hybridized because the lone pair is involved in resonance with the carbonyl group.

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D.

Three atoms contain unhybridized p orbitals.

Unhybridized p orbitals

All three are involved in resonance of the amide group; all three are sp2 hybridized; and all three use their unhybridized p orbital to form the π cloud of the amide bond.

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