How many different photons can be emitted by hydrogen atoms that undergo transitions to the ground state from the `n=5` states?

Explanation

To determine how many different photons can be emitted by hydrogen atoms transitioning from the \( n = 5 \) state to the ground state, we can follow these steps:

### Step 1: Understand the transitions
The hydrogen atom can transition from a higher energy level \( n \) to a lower energy level. In this case, we are looking at transitions from \( n = 5 \) to \( n = 1 \) (ground state). The possible energy levels for hydrogen are \( n = 1, 2, 3, 4, 5 \).

### Step 2: Identify possible transitions
From \( n = 5 \), the atom can transition to any of the lower energy levels \( n = 4, 3, 2, \) and \( 1 \). Each of these transitions can emit a photon.

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