Question

Find the minimum wavelength of Paschen series. Given \(R=1.1\times10^{7}\,\text{m}^{-1}\).

• A. \(656\ \text{nm}\)
• B. \(102.5\ \text{nm}\)
• C. \(818\ \text{nm}\)
• D. \(1220\ \text{nm}\)

Hint:

For the limiting wavelength of any hydrogen spectral series, put \(n_2=\infty\). This gives the shortest wavelength of that series.

Answer 1

The Correct Option is C