An electron jump from the fourth energy level to the first energy level in hydrogen atom. How many photons of energy are emitted ?

Explanation

To solve the question of how many photons of energy are emitted when an electron jumps from the fourth energy level to the first energy level in a hydrogen atom, we can follow these steps:

### Step 1: Understand the Energy Levels
In a hydrogen atom, the energy levels are denoted by quantum numbers (n). The first energy level corresponds to n = 1, the second to n = 2, the third to n = 3, and the fourth to n = 4.

### Step 2: Identify the Transition
The question states that the electron is jumping from the fourth energy level (n = 4) to the first energy level (n = 1). This is a direct transition.

...