Energy of incident photon (E) is given by,
Energy of the electron ejected (K.E)
Hence, the energy with which the electron is bound to the nucleus can be obtained as:
Q: 55. Emission transitions in the paschen series end at orbit and start from orbit n and can be represented as
Calculate the value of n if the transition is observed at 1285 nm. Find the region of the spectrum.
Wavelength of transition = 1285 nm
Hence, for the transition to be observed at 1285 nm, n=5.
The spectrum lies in the infrared region.