2. What is the wavelength of the photon emitted in a transition from then =4 state to the n = 1 state in a lithium atom (Z = 3) according to the Bohr model? ALSO, what speed would an electron need for its de Broglie wavelength to be the same as the wavelength of this photon?

51) A photon of energy 1.24 eV is absorbed by a molecule. a) What is its wavelength in cm and the reciprocal of its wavelength in cm-1? A..........cm                                         B..........cm-1   The molecule transitions to an energy level of 0.24 eV, and emits a photon. b) What is the energy of the emitted photon (eV)?  ..........eV c) What is its wavelength in cm and the reciprocal of its wavelength in cm-1? C..........cm                                         D..........cm-1 d) Find D-B in cm-1. ..........cm-1   The second photon of energy 1.14 eV is absorbed by the same molecule. e) What is its wavelength in cm and the reciprocal of its wavelength in cm-1?   E..........cm                                         F..........cm-1   The molecule transitions to an energy level of 0.24 eV, and emits a photon. f) What is the energy of the emitted photon (eV)?  ..........eV g) What is its wavelength in cm and the reciprocal of its wavelength in cm-1? G..........cm…

7) Find the wavelength of the photon as an electron makes a transition from n=4 to n=3. for particle in a box with E1=13.6 eV

2. Below are the energies of the first 6 energy levels in Lithium as well as the energies of 6 photons. How many of the photons can be created by an electron that transitions between the any two of the first 6 energy levels in Lithium? En (eV) n 1 2 3 4 5 6 -122.4 -30.6 -13.6 -7.65 -4.896 -3.4 Photon Energies (eV) 108.8 2.754 12.562 27.2 47.29 17.0

Which of the following principal levels contains / (angular momentum quantum number) = 3? A. n = 2 level B. both n = 3 and n = 4 levels C. n = 3 level D. n = 4 level How many orbitals are contained in the n = 3 principal number of a given atom? What is the value of the angular momentum quantum number of a d orbital?

5) A metal with work function 9.05 eV is used for a photoelectric effect lab. Find the energy of the electrons if light with 200nm wavelength is used. 6) Energy levels for a particular system is given as En = 10.5 n(n+1)/n^3 in eV. Find the energy for electron transition from n=2 to n=4. Determine if this transition is an absorption that requires energy or it is an emission that releases photon.

An electron jumps from the n = 4 to the n = 1 level in the hydrogen atom. In a second atom and electron jumps from n = 4 to n = 3.   a. Which transition produces a photon with the larger energy?   b. Which transition produces the shorter wavelength photon?