Calculate the energy for the transition of an electron from the n = 4 level to the n = 3 level of a hydrogen atom. E = Joules Is this an absorption or an emission process ?

A Li2+ ion absorbs a photon with a frequency of 6.66 x 10^14 Hz. If the energy of the final state of Li2+ was -7.85 x 10^19 J, calculate the energy of the initial state.

What is the threshold frequency for sodium metal if a photon with frequency 6.66 ×× 1014 s−1 ejects an electron with 7.74 ×× 10−20 J kinetic energy? Will the photoelectric effect be observed if sodium is exposed to orange light?

which energy level transition for a hydrogen atom would emit the photon with the lowest frequecy n=4 to n=1 n=5 to n=1 n=2 to n=3 n=5 to n=4

. Calculate the wavelength of the photons emitted during a transition from the n = 3 to n = 2 level of the H atom. In which region of the electromagnetic spectrum would you expect these photons to lie? [RH = 2.179x10-18 J, h = 6.626x10-34 Js, c = 2.998×108 m s-1] 9. Sketch an energy level diagram for the ground state of the Al atom including electrons. Label all atomic orbitals. Pay particular attention to sensible energy gaps between subshells. %3D

An electron in a hydrogen atom relaxes to the n = 4 level, emitting a photon of 114 THz. What is thevalue of n for the level in which the electron originated?