Which of the following expression represent the wave number of spectral lines in Balmer series (if i — Atomic Structure Chemistry Question

💡 Solution & Explanation

The wave number $\bar{\nu} = R\left(\frac{1}{2^2} - \frac{1}{n^2}\right) = R\left(\frac{1}{4} - \frac{1}{n^2}\right) = R\left(\frac{n^2 - 4}{4n^2}\right) = \frac{R(n - 2)(n + 2)}{4n^2}$. Therefore, correct answer is C.