91Ó°ÊÓ

What is the energy of a photon corresponding to radio waves of frequency \(1.365 \times 10^{6} / \mathrm{s}\) ?

What is the energy of a photon corresponding to microwave radiation of frequency \(1.258 \times 10^{10} / \mathrm{s}\) ?

The green line in the atomic spectrum of thallium has a wavelength of \(535 \mathrm{~nm}\). Calculate the energy of a photon of this light.

Indium compounds give a blue-violet flame test. The atomic emission responsible for this blue-violet color has a wavelength of \(451 \mathrm{~nm}\). Obtain the energy of a single photon of this wavelength.

An electron in a hydrogen atom in the level \(n=5\) undergoes a transition to level \(n=3 .\) What is the frequency of the emitted radiation?

Calculate the frequency of electromagnetic radiation emitted by the hydrogen atom in the electron transition from \(n=4\) to \(n=3\).

Calculate the longest wavelength of the electromagnetic radiation emitted by the hydrogen atom in undergoing a transition from the \(n=7\) level.

What is the difference in energy between the two levels responsible for the ultraviolet emission line of the magnesium atom at \(285.2 \mathrm{~nm}\) ?

What is the wavelength of a proton traveling at a speed of \(6.58 \mathrm{~km} / \mathrm{s} ?\) What would be the region of the spectrum for electromagnetic radiation of this wavelength?

At what speed must an electron travel to have a wavelength of \(10.0 \mathrm{pm} ?\)