What is the number of sigma `(sigma)` bonds and pi `(pi)` bonds in 4-Ethyl-2-,5,7-decatriene?

Explanation

To determine the number of sigma (σ) bonds and pi (π) bonds in 4-Ethyl-2,5,7-decatriene, we can follow these steps:

### Step 1: Identify the Structure
4-Ethyl-2,5,7-decatriene indicates that there are 10 carbon atoms (deca) in the main chain, with double bonds at the 2nd, 5th, and 7th positions. Additionally, there is an ethyl group (C2H5) attached to the 4th carbon.

### Step 2: Draw the Carbon Skeleton
1. Draw a straight chain of 10 carbon atoms.
2. Add the ethyl group (C2H5) to the 4th carbon.
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