Exam 1 – Form C Key 1. D 2. A 3. B 4. D 5. D 6. E 7. A 8. B 9. C 10. C 11. D 12. D 13. D 14. C 15. C 16. B 17. C 18. D 19. C 20. B 21. A 22. D 23. 25 p+, 31 no, 22 e− 56Mn3+ 8 p+, 10 no, 10 e− 18O2− 24. a) Rb 5s b) Pt 5d c) Sn 5p 25. a) Mn 4s2 3d5 b) Te 5s2 5p4 26. a) How many moles of P are in a sample of P2O5 that also contains 1.62 g of O? 2 mol P1.62 g O x =5 x 16.00 g O b) How many grams of C are in a sample of C6H14 that also contains 8.75 x 1024 H atoms? 24236 x 12.01 g C8.75 x 10 H atoms x =14 x 6.02 x 10 H atoms 27. F fluorine Se selenium Cu copper 28. a) FeSO3 iron(II) sulfite b) KC2H3O2 potassium acetate c) Au2O3 gold(III) oxide 29. a) ammonium phosphate (NH4)3PO4 b) manganese(III) chloride MnCl3 c) rubidium nitride Rb3NFor the first two questions, consider the following scenarios: A) a 3− charge and a 2+ charge at 2 units of distance apart B) a 1+ charge and a 3− charge at 2 units of distance apart C) a 0 charge and a 2+ charge at 3 units of distance apart D) a 3− charge and a 2− charge at 3 units of distance apart E) a 2+ charge and a 1+ charge at 2 units of distance apart 1. Which one is the highest energy scenario? 2. Which one is the lowest energy scenario? 3. 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 emission process that gives the smallest energy photon? 4. From the following list of orbitals, select the lowest energy orbital A) 4s on K B) 4p on As C) 3p on P D) 3p on Cl 5. Which statement best describes the location of Cl on the periodic table? A) it is a metal in the same period as F B) it is a non-metal in the same group as S C) it is a metal in the same group as Br D) it is a non-metal in the same period as Ar 6. Of the following experiments, which one gives evidence for quantized energy levels? A) Millikan’s oil drop experiment B) mass spectrometry C) Rutherford’s gold foil experiment D) Thomson’s cathode ray experiment E) atomic spectrum of hydrogen 7. Given the energy diagram at the right, select the statement that is TRUE. A) Y has the largest electron affinity B) X has the smallest electron affinity C) Z has the smallest ionization energy D) Y has largest ionization energy E) none of these statements are trueFor the next two questions, consider the following samples: A) 3 mol Be B) 2 mol B C) 1.5 mol P D) 6 x 1023 Ca atoms E) 3 x 1023 V atoms 8. Which sample contains the least mass? 9. Which sample contains the greatest mass? 10. Select the correct statement: A) electrons and neutrons are in the nucleus of an atom B) protons and electrons are primarily responsible for the mass of an atom C) protons and electrons are responsible for the charge of an ion D) an atom has an unequal number of protons and electrons 11. 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) X-rays have the smaller energy and the smaller frequency B) X-rays have the smaller energy and the larger frequency C) X-rays have the larger energy and the smaller frequency D) X-rays have the larger energy and the larger frequency 12. Consider the following transitions in an atom: I) 4s  3d II) 5p  4d III) 4f  5d Which correspond to absorption of energy? A) I only B) II only C) III only D) I and III E) all of them 13. Which of the following statements about levels and sublevels is NOT correct? A) The n=3 level contains nine orbitals B) The 2s sublevel can contain up to two electrons C) The 5p sublevel contains three orbitals D) The 4d sublevel can contain up to six electrons E) The n=2 level contains four orbitals 14. From the following list of elements, select the one with the smallest ionization energy. A) Ca B) O C) Rb D) Se E) Si For the next two questions, consider the following samples: A) 1.5 mol H B) 20 g of Ar C) 21 g of Li D) 85 g of Rb E) 80 g of K 15. Which one contains the greatest number of atoms? 16. Which one contains the least number of atoms?17. How many of the compounds below are ionic? HClO4 KBr Fe2O3 CrCl3 A) one B) two C) three D) all four E) none of them 18. Which of the following chemical species would have the smallest radius? A) Na B) Na1+ C) Mg D) Mg2+ 19. 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 consistent 20. Atoms with small electronegativities will generally have: A) large radii and low energy valence electrons B) large radii and high energy valence electrons C) small radii and low energy valence electrons D) small radii and high energy valence electrons 21. From the following list of orbitals, select the highest energy orbital A) 2p on C B) 2p on S C) 2p on Cu D) 2p on Na 22. Select the bond with the greatest degree of ionic character A) As-Cl B) As-F C) Sb-Cl D) Sb-F E) Se-Cl 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: 25 p+, 31 no, 22 e− 8 p+, 10 no, 10 e− 24. (3 points each) What is the highest occupied orbital in each of the following atoms? a) Rb b) Pt c) Sn 25. (3 points each) Write the valence electron configuration for the following atoms: a) Mn b) Te 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 will be graded …