Chapter 6 The Structure of Atoms 1 A green laser pointer emits light at 532 0 nm What is the frequency of this radiation a 1 594 102 s 1 b 1 775 10 15 s 1 c 1 595 1011 s 1 d 5 635 1014 s 1 e 6 270 10 12 s 1 2 If a radio wave has a frequency of 17 0 MHz what is the wavelength of this radiation ANS D a 5 10 1015 m b 5 67 10 2 m c 5 88 10 2 m d 1 76 101 m e 1 76 106 m ANS D this wavelength a 5 09 1014 J b 1 12 10 27 J c 3 37 10 19 J d 3 37 10 28 J e 1 30 10 19 J ANS C ANS D 3 According to experiments concerned with the photoelectric effect which of the following will increase 1 2 3 increasing the wavelength of the light striking the surface increasing the frequency of the light striking the surface increasing the number of photons of light striking the surface the kinetic energy of an electron ejected from a metal surface a 1 only b 2 only c 3 only d 1 and 3 e 1 2 and 3 ANS B 4 Excited sodium atoms emit light in the infrared at 589 nm What is the energy of a single photon with 5 A red laser pointer emits light at a wavelength of 488 nm If the laser emits 7 5 10 4 J of energy per second in the form of visible radiation how many photons per second are emitted from the laser a 4 1 10 19 photons sec b 5 4 10 16 photons sec c 8 9 1014 photons sec d 1 8 1015 photons sec e 2 5 1018 photons sec Kotz CCR 8e Test Bank 1 a 8 71 10 22 kJ b 19 1 kJ c 131 kJ d 456 kJ e 525 kJ ANS E a 122 nm b 488 nm c 1220 nm d 787 nm e 811 nm ANS B a n 4 to n 5 b n 5 to n 2 c n 4 to n 3 d n 3 to n 1 e n 3 to n 2 ANS C 6 What is the energy in kilojoules per mole of ultraviolet light with a wavelength of 228 nm 7 If the energy of 1 00 mole of photons is 245 kJ what is the wavelength of the light 8 The energy required to break one mole of hydrogen hydrogen bonds in H2 is 436 kJ mol What is the longest wavelength of light capable of breaking a single hydrogen hydrogen bond a 0 688 nm b 119 nm c 132 nm d 274 nm e 688 nm ANS D 9 For which of the following transitions would a hydrogen atom emit the lowest energy photon 10 For a hydrogen atom calculate the wavelength of an emitted photon in the Lyman series that results from the transition n 3 to n 1 The Rydberg constant is 1 097 107 m 1 h 6 626 10 34 J s and c 2 998 108 m s a 102 6 nm b 95 0 nm c 91 2 nm d 434 1 nm e 1005 nm ANS A 11 How many orbitals have the following set of quantum numbers n 5 3 2 a 0 b 1 Kotz CCR 8e Test Bank 2 12 All of the following sets of quantum numbers are allowed EXCEPT a n 1 0 b n 2 2 c n 3 1 d n 4 1 e n 5 4 ANS B 0 1 1 0 3 13 What is the total number of orbitals having n 4 and 2 14 Which of the following properties is associated with the value of the quantum number the shape of an orbital the size of an orbital the number of electrons in an orbital the energy of an orbital the orientation in space of an orbital 15 What type of orbital is designated n 3 2 2 16 What shell contains a total of 9 orbitals c 3 d 6 e 7 ANS B a 3 b 5 c 7 d 9 e 10 ANS B a b c d e ANS A a 3s b 3p c 3d d 2f e 2d ANS C a n 2 b n 3 c n 4 d n 5 e n 9 ANS B Kotz CCR 8e Test Bank 3