Write an empirical relation for the Balmer series of hydrogen atom.

Explanation

To derive the empirical relation for the Balmer series of the hydrogen atom, we will follow these steps:

### Step 1: Understand the Balmer Series
The Balmer series corresponds to the transitions of electrons in a hydrogen atom from higher energy levels (n2) to the second energy level (n1 = 2). The series includes transitions from n2 = 3, 4, 5, and so on.

### Step 2: Write the Formula for Wavenumber
The empirical formula for the wavenumber (σ) of the spectral lines in the hydrogen atom is given by the Rydberg formula:
\[
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