(B) Reduce this table to its component free-ion terms, and identify the ground-state term.

2. (A) Determine the possible microstates for a d⁴ configuration and use them to prepare a microstate table.

(E) How many vibration modes are IR active? 

15. There are two groups of solutions: group A includes the water solutions of 0.01M AgNO₃, 0.01M Pb(NO₃)₂, 0.01M Ba(NO₃)₂, and 0.01M Ni(NO₃)₂. Group B includes the water solution of 0.01M NaCl, 0.01M Na₂SO₄, and 0.01M Na₂S. If we take each solution in group A to mix with equal volume of each solution in group B, which of the following statements is correct? (A) There are 8 solutions with precipitation (B) there are 5 solutions with no precipitation (C) there are 4 solutions with black precipitation (D) there are 5 solutions with white precipitation (E) none of the mixtures with Ni(NO₃)₂ has the precipitation

14. The following diagram summarizes the reduction potentials (εº) of different chromium species. Please calculate the ε from Cr³⁺ to Cr (Value of X). (Image of reduction potentials diagram) (A) -2.22 (B) -1.32 (C) -0.74 (D) -0.66 (E) -0.44

13. What is the formal charge of oxygen in carbon monoxide? (A) +2 (B) +1 (C) 0 (D) -1 (E) -2