a. i) Define the term spectroscopy. (1 mark) ii) Clearly explain with an aid of diagram the principle of spectroscopy. (4 marks) b. Given an electromagnetic radiation having 2.0 x 10 m, calculate: i. E (kJ/mole ) ii. v (3 marks) (2 marks) (2 marks) (2 marks) c. What changes do the following electromagnetic radiations cause on a molecular matter? i) Radio waves. ii) Microwave. iii) IR radiation. iv) Visible radiation. QUESTION TWO (14 MARKS) a. Briefly, explain the principle of IR. b. Calculate the number of vibration modes of the following compounds and name them. (2 marks) (4% marks) i) CO ii) HO c. Classify the following vibrations into IR-active or IR-inactive. (1% marks) i) N ii) CO iii) HCI