Question 2 [38 marks] (a) (i) Which of the following four vibrations shown in Figure 2.1 will be Infrared active, and which will be Raman active? Provide brief explanations for your selection. [8 marks] (ii) Why is the number of vibrations shown for this molecule fewer than the number of vibrations that may be calculated by the 3N-6 rule? [4 marks] Ta tetrahedral V symm stretch V2 bend V3 stretch v4 bend