OnlineCBT
Chemistry · Structure of atom
हिन्दीWhat is the wavelength of a photon emitted during a transition from \( n = 5 \) state to the \( n = 2 \) state in a hydrogen atom?
Correct answer · Option 4
\( 434 \text{ nm} \)
Explanation
Using \( \Delta E = 2.18 \times 10^{-18} (\frac{1}{2^2} - \frac{1}{5^2}) \text{ J} \) and \( \lambda = \frac{hc}{\Delta E} \), we get \( \lambda = 434 \text{ nm} \).
