What is the energy emitted when an electron jumps froms second orbit to first orbit in a hydrogen atom ?

Explanation

To find the energy emitted when an electron jumps from the second orbit to the first orbit in a hydrogen atom, we can follow these steps:

### Step 1: Understand the Energy Formula
The energy of an electron in a hydrogen atom at a particular orbit (n) is given by the formula:
\[ E_n = -\frac{13.6 \, \text{eV}}{n^2} \]

### Step 2: Calculate the Energy of the Second Orbit (E2)
For the second orbit (n = 2):
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