Draw energy level diagram for hydrogen atom, showing first four energy levels corresponding to n = 1,2, 3 and 4. Show transitions responsible for :
Absorption spectrum of Lyman series.

Explanation

To draw the energy level diagram for a hydrogen atom and show the transitions responsible for the absorption spectrum of the Lyman series, follow these steps:

### Step 1: Draw the Energy Levels
1. **Identify the Energy Levels**: For the hydrogen atom, the energy levels are denoted by the principal quantum number \( n \). The first four energy levels are:
- \( n = 1 \) (Ground state)
- \( n = 2 \)
- \( n = 3 \)
- \( n = 4 \)
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