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  4. The sum of the number of σ and π bonds in 5-oxohexanoic acid is:

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Q. The sum of the number of σ and π bonds in 5-oxohexanoic acid is:

NTA AbhyasNTA Abhyas 2020Organic Chemistry – Some Basic Principles and Techniques

Solution:

The structure of the given compound is as follows:

image

All single bonds are $\sigma $ bonds and one of the bond in multiple bonds is also $\sigma $ bond, and others are $\pi $

5-oxo-hexanoic acid contains $18 \sigma -$ and $2 \pi -$ bonds. Hence, total number of $\sigma -$ and $\pi -$ bonds will be 20