Calculate the wavelength of the first line in the Balmer series of hydrogen spectrum

Explanation

To calculate the wavelength of the first line in the Balmer series of the hydrogen spectrum, we can follow these steps:

### Step 1: Understand the Formula
The wavelength (λ) for the Balmer series can be calculated using the formula:

\[ \frac{1}{\lambda} = R_H \cdot Z^2 \left( \frac{1}{n_1^2} - \frac{1}{n_2^2} \right) \]
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