A FrankHertz experiment was carried out with on thsicsium vapour in a chamber. The energies of the electrons sent into the chamber lEinputl and those coming out of the chamber {Euput} were measured and the data is given below. IE} 0.5. 1.0, 2.0, or 4.0 a) Draw an energv level diagram for thsicsium. Assume that the ground state energy is zero. {1.5 marks} b} What wavelengths of light would vou expect thsicsium to absorb? Show vour work. {1 mark} c} If an electron in a Physicsium atom was excited to the fourth excitation state, how manv possible wavelengths of light would be emitted as the electron fell to its ground state? {1.5 marks}