What types of hybridisation are involved in the formation of following molecules?
` C_2 H_4`

Explanation

To determine the types of hybridization involved in the formation of the molecule \( C_2H_4 \) (ethylene), we can follow these steps:

### Step 1: Draw the Lewis Structure
The first step is to draw the Lewis structure of \( C_2H_4 \). The molecule consists of two carbon atoms and four hydrogen atoms. The structure can be represented as follows:

```
H H
\ /
...