Exam 1 – Form B Key 1. D 2. C 3. A 4. C 5. D 6. D 7. D 8. C 9. C 10. E 11. C 12. A 13. A 14. D 15. D 16. A 17. E 18. C 19. B 20. A 21. C 22. A 23. 35 p+, 44 no, 36 e− 79Br1− 12 p+, 10 no, 10 e− 22Mg2+ 24. a) As 4p b) Ca 4s c) W 5d 25. a) Sn 5s2 5p2 b) Ti 4s2 3d2 26. a) How many grams of F are in a sample of B2F6 that also contains 0.455 moles of B? 6 x 19.00 g F0.455 mol B x 2 mol B b) How many individual N atoms are in a sample of C4H4N2 that also contains 26.2 g of C? 232 x 6.02 x 10 N atoms26.2 g C x 4 x 12.01 g C 27. P phosphorus Ge germanium Ar argon 28. a) Cu(NO2)2 copper(II) nitrite b) NaMnO4 sodium permanganate c) ScI3 scandium(III) iodide 29. a) titanium(IV) sulfate Ti(SO4)2 b) vanadium(II) chloride VCl2 c) silver selenide Ag2Se1. Of the following experiments, which one gives evidence for quantized energy levels? A) Thomson’s cathode ray experiment B) Millikan’s oil drop experiment C) Rutherford’s gold foil experiment D) atomic spectrum of hydrogen E) mass spectrometry 2. Which of the following statements about levels and sublevels is NOT correct? A) The 2p sublevel can contain up to six electrons B) The 4d sublevel can contain up to ten electrons C) The 5s sublevel contains two orbitals D) The n=4 level contains four sublevels E) The n=3 level contains nine orbitals For the next two questions, consider the following samples: A) 2 mol O B) 6 x 1023 Si atoms C) 3 x 1023 Ca atoms D) 1.5 mol Ne E) 6 mol He 3. Which sample contains the greatest mass? 4. Which sample contains the least mass? 5. From the following list of orbitals, select the highest energy orbital A) 2p on O B) 2p on B C) 3p on Al D) 3s on Na 6. Given the energy diagram at the right, select the statement that is TRUE. A) X has the largest electron affinity B) Y has the smallest electron affinity C) Y has the smallest ionization energy D) Z has largest ionization energy E) none of these statements are true 7. Select the correct statement: A) protons and electrons are in the nucleus of an atom B) protons and electrons are primarily responsible for the mass of an atom C) protons and neutrons are responsible for the charge of an ion D) an ion has an unequal number of protons and electrons 8. Which of the following chemical species would have the largest radius? A) Ca B) Ca2+ C) K D) K1+For the next two questions, consider the following samples: A) 18 g of Be B) 59 g of Co C) 40 g of Br D) 1.5 mol Ti E) 3 g of H 9. Which one contains the least number of atoms? 10. Which one contains the greatest number of atoms? 11. Which statement best describes the location of Ag on the periodic table? A) it is a metal in the same period as Cu B) it is a non-metal in the same group as Pd C) it is a metal in the same group as Au D) it is a non-metal in the same period as Cd 12. Consider the following transitions in the Bohr model of the atom: A) n = 2  n = 4 B) n = 6  n = 3; C) n = 3  n = 5; D) n = 2  n = 1 Which of these is the absorption process that requires the greatest energy? For the next two questions, consider the following scenarios: A) a 4+ charge and a 1− charge at 2 units of distance apart B) a 2+ charge and a 0 charge at 3 units of distance apart C) a 2+ charge and a 1+ charge at 2 units of distance apart D) a 3− charge and a 1− charge at 2 units of distance apart E) a 3− charge and a 2+ charge at 4 units of distance apart 13. Which one is the lowest energy scenario? 14. Which one is the highest energy scenario? 15. Consider the following experiment, where a sample of two different particles, X and Y, pass from a source through an electrical field. Which of the following three statements is/are consistent with the experiment? I) X is a 1− charge, Y is a 1+ charge, and they are of equal mass II) X is a 2+ charge, Y is a 2− charge, and they are of equal mass III) X is a 1+ charge, Y is a 2− charge, and the mass of X is half the mass of Y A) I only B) II only C) I and III D) II and III E) all three are consistent16. How many of the compounds below are ionic? SOCl2 CoS HBr H2O A) one B) two C) three D) all four E) none of them 17. Select the bond with the greatest degree of covalent character A) Al-O B) Al-S C) Ga-O D) Ga-S E) Si-P 18. Infrared light has a wavelength of about 10,000 nm, while X-rays have a wavelength of about 1 nm. Which of the following statements is true regarding these? A) Infrared light has the larger energy and the smaller frequency B) Infrared light has the larger energy and the larger frequency C) Infrared light has the smaller energy and the smaller frequency D) Infrared light has the smaller energy and the larger frequency 19. From the following list of elements, select the one with the largest ionization energy. A) As B) Cl C) Ga D) K E) Mg 20. Atoms with large electronegativities will generally have: A) small radii and low energy valence electrons B) small radii and high energy valence electrons C) large radii and low energy valence electrons D) large radii and high energy valence electrons 20. Consider the following transitions in an atom: I) 3s  3p II) 5s  4d III) 4f  5p Which correspond to emission of energy? A) I only B) II only C) III only D) II and III E) none of them 22. From the following list of orbitals, select the lowest energy orbital A) 3s on Br B) 3s on Al C) 3s on Fe D) 3s on K GO ON TO THE NEXT PAGE PLACE YOUR ANSWERS FOR #23 - 29 DIRECTLY ON THE NEXT PAGE23. (3 points each) Write the symbols of the isotopes (including charge and mass number) that have: 35 p+, 44 no, 36 e− 12 p+, 10 no, 10 e− 24. (3 points each) What is the highest occupied orbital in each of the following atoms? a) As b) Ca c) W 25. (3 points each) Write the valence electron configuration for the following atoms: a) Sn b) Ti 26. (5 points each) SET UP the following calculations, showing the conversion factor(s) you would use. You do NOT need to calculate an answer. You