4. (20 points) (a) Using information provided in the table below, list all of the term symbols that describe the valence electron configuration of atomic selenium. Remember to include the values of the total angular momentum quantum number, J, in your term symbols. Electron configuration Term symbol (excluding J) S1 2S p1 2P p², p4 1S, 1D, 3P p3 2P, 2D, 4S d1, d⁹ 2D d², d8 1S, 1D, 1G, 3P, ³F d³, d7 d4, d6 d5 2P, 2D (2), 2F, 2G, 2H, 4P, 1 1S(2), 1D(2), 1F,¹G(2), 21, ³P(2), 3D, 3F (2), 3G, 3H, 5D 2S, 2P, 2D(3), 2F(2), 2G(2), 2H, 21, 4P. 4D, 4F, 4G, 6S 4F Term symbols: b) Construct an energy level diagram for selenium using Hund's Rules. 4c) The absorbance spectrum of selenium shows two peaks in the infrared region, a strong absorbance at 1990 cm¹ and a weaker peak 544 cm¹. Given the selection rules for atomic spectroscopy, AS = 0, AL = 0, ±1, and AJ = 0, ±1, mark the origin of these two peaks by placing arrows on your energy level diagram in part "b," and describing the two absorbance processes using term symbols below. 4d) Provide a reason for the peak at 544 cm¹ being weaker than the one at 1990 cm-¹.