Exam 1 Form D Key 1 C 2 E 3 A 4 D 5 C 6 A 7 A 8 A 9 A 10 D 11 E 12 B 13 B 14 B 15 D 16 B 17 D 18 C 19 B 20 C 21 D 22 B 23 33 p 40 no 28 e 24 a Xe 5p 25 a Ni 4s2 3d8 26 a How many grams of O are in a sample of C2H4O2 that also contains 1 98 moles of H 2 x 16 00 g O 1 98 mol H x 4 mol H b How many individual H atoms are in a sample of C5H8 that also contains 162 g of C 8 x 6 02 x 1023 H atoms 162 g C x 5 x 12 01 g C 27 As arsenic 73 20 p 22 no 18 e As5 b Rh K 4d c Mg b In 5s2 5p1 potassium 28 a Co ClO4 2 b NaCN c Cd3N2 cobalt II perchlorate sodium cyanide cadmium II nitride 29 a zinc II nitrate Zn NO3 2 c barium phosphide b tin IV iodide Ba3P2 42 Ca2 3s Cr chromium SnI4 1 Select the bond with the greatest degree of ionic character A Al O B Al S C Ga O D Ga S E Si P 2 Given the energy diagram at the right select the statement that is TRUE A Z has the largest electron affinity B Y has the smallest electron affinity C Z has the smallest ionization energy D X has largest ionization energy E none of these statements are true 3 Select the correct statement A protons and neutrons are in the nucleus of an atom B electrons and neutrons 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 equal number of protons and electrons 4 From the following list of elements select the one with the smallest ionization energy A As B Cl C Ga D K E Mg For the next two questions consider the following samples A 40 g of Br B 1 5 mol Ti C 3 g of H D 18 g of Be E 59 g of Co 5 Which one contains the greatest number of atoms 6 Which one contains the least number of atoms 7 Which statement best describes the location of Mo on the periodic table A it is a metal in the same period as Tc B it is a non metal in the same group as Cr C it is a metal in the same group as Nb D it is a non metal in the same period as W 8 How many of the compounds below are ionic NH3 NaCl CH3Br P2O5 A one B two C three D all four E none of them 9 From the following list of orbitals select the lowest energy orbital A 2p on O B 2p on B C 3p on Al D 3s on Na For the next two questions consider the following samples A 1 5 mol Ne B 6 mol He C 6 x 1023 Si atoms D 3 x 1023 Ca atoms E 2 mol O 10 Which sample contains the least mass 11 Which sample contains the greatest mass 12 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 two times the mass of Y A I only B II only C I and III D II and III E all three are consistent 13 Which of the following statements about levels and sublevels is NOT correct A The n 3 level contains three sublevels B The n 2 level contains two orbitals C The 5p sublevel can contain up to six electrons D The 4d sublevel contains five orbitals E The 3s sublevel can contain up to two electrons For the next two questions consider the following scenarios A a 3 charge and a 2 charge at 4 units of distance apart B a 3 charge and a 1 charge at 2 units of distance apart C a 2 charge and a 0 charge at 3 units of distance apart D a 4 charge and a 1 charge at 2 units of distance apart E a 2 charge and a 1 charge at 2 units of distance apart 14 Which one is the highest energy scenario 15 Which one is the lowest energy scenario 16 Which of the following chemical species would have the smallest radius A Ca B Ca2 C K D K1 17 Of the following experiments which one gives evidence for quantized energy levels A Rutherford s gold foil experiment B Millikan s oil drop experiment C mass spectrometry D atomic spectrum of hydrogen E Thomson s cathode ray experiment 18 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 least energy 19 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 larger energy and the smaller frequency B X rays have the larger energy and the larger frequency C X rays have the smaller energy and the smaller frequency D X rays have the smaller energy and the larger frequency 20 Atoms with large 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 Consider the following transitions in an atom I 3s 3p II 5s 4d Which correspond to absorption of energy A I only B II only C III only III 4f 5p D I and II 22 From the following list of orbitals select the highest energy orbital A 3s on Br B 3s on Al C 3s on Fe E all of them D 3s on K GO ON TO THE NEXT PAGE PLACE YOUR ANSWERS FOR 23 29 DIRECTLY ON THE NEXT PAGE 23 3 points each Write the symbols of the isotopes including charge and mass number that have 33 p 40 no 28 e 20 p 22 no 18 e 24 3 points each What is the highest occupied orbital in each of the following atoms a Xe b Rh c Mg 25 3 points each Write the valence electron configuration for the following atoms b In a Ni 26 5 points each SET UP …