CHEM1300F08-FinalPartA

CHEM1300F08-FinalPartA - CHEM 1300 Final Exam, Fall 2008...

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CHEM 1300 Final Exam, Fall 2008 Page 3 of 17 Paper 179, Part A: Multiple Choice Time: 3 Hours 1. Which of the following species has 12 protons, 14 neutrons, and 10 electrons? a) Si 2+ b) Mg c) Ne d) Si e) Mg 2+ 2. Which of the following statements is true concerning the masses of individual Cl atoms? a) All atoms have a mass of 35.45 amu b) None of the atoms have a mass of 35.45 amu c) Some of the atoms have a mass of 35.45 amu d) Most of the atoms have a mass of 35.45 amu e) All atoms have a mass of 17 amu 3. Determine the identity of the daughter nuclide from the positron emission of 11 6 C a) 11 5 B b) 11 7 N c) 12 6 C d) 10 5 B e) 12 7 N 4. Identify the missing particle in the following nuclear equation: ? He Th 4 2 228 90 + a) 232 92 U b) 232 89 Ac c) 228 89 Ac d) 228 88 Ra e) 224 88 Ra 5. Which of the following transitions in a hydrogen atom represent the emission of a photon with the longest wavelength? a) n = 1 to n = 2 b) n = 3 to n = 1 c) n = 3 to n = 4 d) n = 4 to n = 2 e) n = 5 to n = 4
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CHEM 1300 Final Exam, Fall 2008 Page 4 of 17 Paper 179, Part A: Multiple Choice Time: 3 Hours 6. How much energy (in kJ) is required to ionize 2.78 moles of hydrogen atoms in their ground state electron configuration? a) 3 2.74 10 kJ × b) 3 4.72 10 kJ × c) 3 1.66 10 kJ × d) 3 3.65 10 kJ × e) 3 5.89 10 kJ × 7. The energy required to eject a mole of electrons for Ti metal is 3.14×10 3 kJ. What is the lowest frequency of light that can be used to eject electrons from the Ti metal surface? a) 15 7.87 10 Hz × b) 15 4.74 10 Hz × c) 15 2.11 10 Hz × d) 15 1.27 10 Hz × e) 15 6.19 10 Hz × 8. In which orbital below would an electron (on average) be farthest from the nucleus for a given atom? a) 1s b) 4f c) 3s d) 3d e) 2p 9. What is the wavelength associated with electrons traveling at 1/100 the speed of light? a) 243 nm b) 0.243 nm c) 412 nm d) 0.0798 nm e) 12.5 nm 10. What is the smallest acceptable value for the missing quantum number? n = ?, l = 2, m l = 0, m s = +½ a) 3 b) 2 c) 4 d) 5 e) 1
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CHEM 1300 Final Exam, Fall 2008 Page 5 of 17 Paper 179, Part A: Multiple Choice Time: 3 Hours 11. Which of the following statements about orbital shapes is not true ? a) A 1 s orbital is spherical. b) The probability of finding an electron at the nucleus for a 2p orbital is zero. c) There are only two 2 p orbitals that are perpendicular to each other. d) There are five 3 d orbitals. e) Four of the 3 d orbitals are alike except for their orientations in space. 12. How many unpaired electrons are in the ground state electron configuration of calcium? a) 5 b) 2 c) 0 d) 1 e) 3 13. Give the ground state electron configuration for Br - . a) [Ar] 4s 2 3d 10 4p 6 b) [Ar] 4s 2 3d 10 4p 5 c) [Ar] 4s 2 4p 6 d) [Ar] 4s 2 4d 10 4p 6 e) [Ar] 4s 2 3d 10 4p 4 14. Choose the valence orbital diagram that represents the ground state of Zn. a)
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This note was uploaded on 12/19/2011 for the course AP CHEM 1300 taught by Professor James during the Fall '11 term at Manitoba.

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CHEM1300F08-FinalPartA - CHEM 1300 Final Exam, Fall 2008...

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