Question
Indicate the $\sigma$ and $\pi$ bonds in the following molecules:$\mathrm{CH}_2=\mathrm{C}=\mathrm{CH}_2$.
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Answer
The $\sigma$ and $\pi$ bonds are indicated below:
$4\text{C}-\text{H }\sigma-\text{bonds}$
$2\text{C}-\text{C }\sigma-\text{bonds}$
$2\text{C}-\text{C }\pi-\text{bonds}$
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