When an election in hydrogen atom jumps from the third excited state to the ground state, how would the de-Broglie wavelength associated with the electron change ? Justify your answer.

Explanation

To determine how the de-Broglie wavelength associated with an electron changes when it jumps from the third excited state to the ground state in a hydrogen atom, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Principal Quantum Numbers**:
- The third excited state corresponds to \( n = 4 \).
- The ground state corresponds to \( n = 1 \).

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