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Unformatted text preview: Page 1 of 9 Part 1. Multiple Choice (14 marks total) For each numbered statement below, circle the letter that corresponds to the best answer. There is only one correct answer per question. Each question answered correctly is worth 2 marks. 1. The most abundant element in the Earth's crust is: (a) aluminum (b) francium (c) iron (d) oxygen (e) silicon 2. The bond order of the chlorine-oxygen bonds in the perchlorate anion [ClO 4 ] is: (a) 1 (b) between 1 and 2 (c) 2 (d) between two and 3 (e) 3 3. Which of the following is predicted to be the most soluble in water? (a) CH 4 (b) CCl 4 (c) SiH 4 (d) NH 3 (e) PH 3 4. Which of the following molecules has the lowest nitrogen-nitrogen bond order? (a) N 2 H 4 (b) N 2 H 2 (c) N 2 (d) N 3- (e) N 2 O 5. What is the kinetic energy of fluorine atoms in a beam that exhibits the same diffraction pattern as a laser beam with a wavelength of 5.15 nm? (a) 3.85 10 17 J (b) 2.62 10 22 J (c) 3.85 10 24 J (d) 3.85 10-20 J (e) 2.62 10 25 J Page 2 of 9 6. Which of the following statements are true? i) A wavefunction can have positive or negative values. ii) The probability of finding a particle at a particular point is inversely proportional to the wavefunction. iii) The wavelength of the particle-in-a-box wavefunctions increases as the size of the box increases. iv) The speed of green light is greater than the speed of red light. (a) Only i) and ii) are true. (b) Only i) and iii) are true. (c) Only iii) and iv) are true. (d) All the statements are true. (e) None of the statements is true. 7. Oseltamivir is an antiviral drug used for the treatment of influenza. Sold under the trade name Tamiflu , annual sales of this drug exceed $1 billion. The skeletal structure of this drug is shown below....
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- Winter '07