Calculate the energy emitted in terms of wave mumber when the electrons of hydrogen atom jumps from second to first orbit.

The energies of the electron in the second and the third Bohr orbits of the hydrogen atoms are -5.42xx10^(19)J and -2.41xx10^(19)J respectively. Calculate the wavelength (in S.I. unit) of the emitted radiation, when the electron jumps from the third to the second orbit.

How much energy in joule, is required to shift an electron of hydrogen atoms from 3rd orbit to 4th orbit?

Calculate the approximate qunatum number for an electron of hydrongen atom revolving in orbit of radius 1 mm.

Derive an expression for the radius of the first orbit of the electron of the hydrogen atom.

Consider the reaction, 2N_2O_5 rarr 4NO_2 + O_2 The concentration of N_2O_5 decreases from 2.33M to 2.08M in 184 minutes. Calculate the average rate in terms of hours, minutes and seconds. What is the rate of production of NO_2 during the period.