If an electron makes a transition from the n = 5 Bohr orbit to the n = 2 orbit, determine the wavelength of the photon created in the process. Answer in units of m. Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted. Answer in units of m/s.

If an electron makes a transition from the n = 5 Bohr orbit to the n = 2 orbit, determine the wavelength of the photon created in the process. Answer in units of m. Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted. Answer in units of m/s.