e4_practice_F05

e4_practice_F05 - Name: _ Class: _ Date: _ ID: A...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Che_132_Final_F2005 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. The most penetrating type of radioactivity is _________ , and the least penetrating is _________. a. alpha particles; gamma rays b. beta particles; alpha particles c. beta particles; gama rays d. gamma rays; alpha particles e. gamma rays; beta particles ____ 2. In the reaction shown, the radiation produced is a(an) 29 66 Cu 30 66 Zn + ______________. a. alpha particle b. beta particle c. gamma ray d. neutron e. positron ____ 3. Samples of the following isotopes in pure form, each containing the same number of atoms, are taken. After one year, which sample would still contain the most atoms of the original substance? a. sodium-24 (half-life 15 hours) b. strontium-90 (half-life 29 years) c. iodine-131 (half-life 8 days) d. lead-210 (half-life 22 years) e. thallium-206 (half-life 4 min) ____ 4. 90 Sr is an isotope produced from atmospheric testing of nuclear bombs. If nuclear testing was stopped in 1960, what percentage of radioactivity due to 90 Sr remained in 2000? The half-life of 90 Sr is 28.5 years. a. 62.2 % b. 37.8 % c. 12.3 % d. 0.85 % e. virtually 0 % ____ 5. What is the binding energy per nucleon, in joules, of a chlorine-35 atom if its atomic mass = 34.9595 amu ? (e - mass = 0.00055 amu, n mass = 1.00867 amu, p mass = 1.00728 amu, c = 3.00 × 10 8 m/s, 1 amu = 1.6606 × 10 -24 g, 1J = 1 kg m 2 /s 2 a. 1.41 × 10 -12 J/nucleon b. 4.93 × 10 -11 J/nucleon c. 1.56 × 10 -12 J/nucleon d. 1.56 × 10 -11 J/nucleon e. 1.56 × 10 -10 J/nucleon
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Name: ________________________ ID: A 2 ____ 6. Transition metals often form coordinate covalent bonds with ligands in which a. two electrons in a d orbital on the metal ion are used, and an empty orbital on the ligand. b. two electrons are transferred from the ligand to the metal. c. two electrons in an orbital on the ligand are used, and an empty d orbital on the metal ion. d. a single electron from a d-orbital on the metal and a single electron from the ligand are involved. e. two electrons are transferred from the metal to the ligand. ____ 7. What is the name of the metal complex [Co(NH 3 ) 4 Cl 2 ] + , which has a coordination number of six, when the chlorines are adjacent to each other? a. cis-tetraamminedichlorocobalt(III) ion b. trans-tetraamminedichlorocobalt(II) ion c. cis-tetraamminedichlorocobalt(II) ion d. trans-tetraamminedichlorocobalt(III) ion e. diamminetetrachlorocobalt(III) ion ____ 8. A compound contains a transition metal coordination complex. This complex consists of one
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e4_practice_F05 - Name: _ Class: _ Date: _ ID: A...

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