How many σ and π bonds are present in each of the following molecules?
(a) `HCequiv"CC"H=CHCH_(3)` (b) `CH_(2)=C=CHCH_(3)`

Explanation

To determine the number of σ (sigma) and π (pi) bonds in the given molecules, we will analyze each structure step by step.

### (a) For the molecule `HCequiv"CC"H=CHCH_(3)`:

1. **Draw the structure**:
- The molecule can be represented as:
```
H H
...