2003_final - Section A 140 points Multiple Choice Circle the best answer 1 Which has the largest radius a He b Li c Na d Cl e Cl 2 In 1.0 moles of

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Section A. 140 points: Multiple Choice. Circle the best answer. 1. Which has the largest radius? a) He b) Li + c) Na + d) Cl e) Cl 2. In 1.0 moles of calcium nitrate, there are how many nitrogen atoms? a) 5 b) 18.06*10 23 c) 6.02*10 23 d) 24 e) 12.04*10 23 3. The oxidation state of nitrogen in potassium nitrate is: a) 0 b) +3 c) +5 d) –3 e) none of these
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4. Which is the strongest reducing agent? a) H 2 b) N 2 c) Na d) O 2 e) S 5. Some reasonable oxidation states for phosphorous are: a) 5,3,0 b) 5,2,0 c) 3,2,0 d) 3,0, -2 e) none of these 6. The bonding in H 2 is best described as: a) covalent b) H-bond c) ionic d) polar e) van der Waals
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7. Which species does not obey the octet rule? a) H 2 S b) F 2 c) CH 4 d) BH 3 e) none of these 8. Which set of quantum numbers is forbidden? a) n=1, l=0, m=0 b) n=2, l=0, m=0 c) n=3, l=0, m=0 d) n=2, l=2, m=2 e) n=2, l=1, m=1 9. The ground state of Zr has how many electron with n = 3, m = 0? a) 0 b) 2 c) 4 d) 6 e) none of these
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10. The 2p Æ 1s transition in an H atom is at ______nm. The 2p Æ 1s transition in Li 2+ will have a frequency of ______ sec -1 . The answers are, respectively, a) 121 and 2.22 * 10 16 b) 2.47 * 10 15 and 13 c) 2.47 * 10 15 and 2.22 * 10 16 d) 121 and 13 e) none of these 11. Which is an acid anhydride? a) H 2 b) Na 2 O c) SO 2 d) NH 3 e) none of these 12. Consider the two statements below: 1) In the He + ion the 2s and 2p states have the same energy. 2) In the Li atom the 3s energy is higher than the 3p. These statements are, respectively, a) true, true b) true, false c) false, true d) false, false
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Which has the largest dipole moment? a) Li 2 b) CO c) C 6 H 6 d) CH 3 OH e) N 2 14. Which aqueous reagent can be used to determine whether a sample contains KBr (aq) or KNO 3 (aq)? a) KCl (aq)
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This note was uploaded on 02/20/2012 for the course CHEM 101 taught by Professor Any during the Fall '08 term at Northwestern.

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2003_final - Section A 140 points Multiple Choice Circle the best answer 1 Which has the largest radius a He b Li c Na d Cl e Cl 2 In 1.0 moles of

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