Which of the following provides the greatest energy? Provide all calculations needed to justify your answer. • 9.00 x 1011 photons of frequency 0.50 x 10⁹ s-1 • 1.00 x 108 photons of wavelength 250 nm • 3.00 x 107 photons of wavelength 400 nm • 1.00 x 106 photons of frequency 2.50 x 1015 S-1 • 9.00 x 1015 photons of wavelength 2.00 m

Pieces of potassium (Φ  = 3.68 × 10–19 J) and sodium (Φ  = 4.41 × 10–19 J) metal are exposed to radiation of wavelength 315 nm. What is the velocity of the electrons from potassium?   What is the velocity of the electrons from sodium?

The light emitted from one of the following electronic transitions (n=4 to n = 3 or n = 3 to n = 2) in the hydrogen atom causes the photoelectric effect in a particular metal while light from the other transition does not. Which transition causes the photoelectric effect and why?

Choose the statement which correctly indicates whether energy is emitted or absorbed and the wavelength of the energy emitted or absorbed (in meters) when the following electronic transition occurs in hydrogen:An electron moves from the n=4 to the n=2 energy level. The value of the Rydberg constant is RH = 1.097 x 107 m-1.

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

What is the wavelength of light that has a frequency of 7.155 x 1014 s-1? Note that - 1 nm = 1 x 10-9 m Note: In problems dealing with frequencies, wavelengths, photon energies, or electron transitons in hydrogen atoms, you may need some of the following equations: 1 v = c where c = 2.99792458 x 108 m s1 Ep = h v where h = 6.6260755 x 1034 J s En = -RH / n2 where RH 2.1798741 x 10-18 j %3D

Determine the energy of a photon with a wavelength of 317 nm. (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)