Write the state of hybridisation of all the carbon atoms in `CH_2 = C = CH_2`.

Explanation

To determine the state of hybridization of all the carbon atoms in the compound \( CH_2 = C = CH_2 \), we will analyze the bonding and geometry of each carbon atom step by step.

### Step 1: Identify the Structure
The compound \( CH_2 = C = CH_2 \) consists of three carbon atoms connected by double bonds. The structure can be represented as:

```
H2C = C = CH2
```
...