Homework Answers
The first carbon from left makes 4 single bonds. Hence it has 4 electron densities. Hence hybridization is sp3.
The middle carbon makes 2 single bonds and a double bond. Hence it has 3 electron densities. Hence hybridization is sp2.
The carbon on right side also makes 4 single bonds. Hence it has 4 electron densities. Hence hybridization is sp3.
The molecular structure and bonds are shown below:
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