An atom in a 3d state emits a photon of wavelength 475.082 nm when it decays to a 2p state. What is the energy (in electron volts) of the photon emitted in this transition?

A hydrogen atom initially in its ground state (n=1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon?

X-ray is produced by bombarding a tungsten target with high energy electrons accelerated by 8.8 kV of voltage. Use σ = 1 for the electron transition down to K shell (n = 1) and σ = 7.4 for the electron transition down to L shell (n = 2) for characteristic X-ray. What is energy of the characteristic X-ray of the tungsten (Z = 74) target when the electron in n = 4 orbital moves down to n = 1? What is the energy the characteristic X-ray of the tungsten (Z = 74) target when the electron in n = 3 orbital moves down to n = 2?

For an electron in a hydrogen atom, which of the following transitions would represent the largest quantum of energy being absorbed? Hydrogen Energy Transitions and Radiation Level n = ∞ n = 5 n = 4 486 nm n = 3 Infrared 434 nm 656 nm wavelengths n = 2 Visible wavelengths Ionization n = 1 Ultraviolet