What is the hybridization around the indicated carbon atom in the following anion?

Name: What is the hybridization around the indicated carbon atom in the following anion?
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Question

Quizplus · Accepted Answer

The indicated carbon has three neighboring atoms bonded to it, so it requires three orbitals for bonding. In addition, it has one lone pair of electrons, which requires one more orbital. This gives a total of four orbitals needed, which corresponds to sp3 hybridization. Choice B is the only option that includes sp3 hybridization.

What Is the Hybridization Around the Indicated Carbon Atom in the Following