A gas of identical hydrogen like atoms has some atoms in the

Last updated: 7/31/2022

A gas of identical hydrogen like atoms has some atoms in the lowest energy level A and some atoms in excited energy level B. The atoms of the gas make transition to a higher energy level by absorbing monochromatic light photons of energy 2.55 eV. Subsequently, the atoms emits radiation of only six different photons energies. Some of the emitted photons have an energy of 2.55 eV, some have more energy and some have less energy than 2.55 eV, then Principal quantum number of initially excited level B is 3 Principal quantum number of initially excited level B is 2 Ionization energy of the atom is 54.4 eV Ionization energy of the atom is 13.6 eV