Chem HW 4 - Marek, Erin Homework 4 Due: Oct 2 2007, 11:00...

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Unformatted text preview: Marek, Erin Homework 4 Due: Oct 2 2007, 11:00 pm Inst: Brodbelt 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. Brodbelt CH301 Homework 4 Chapter 13-I Due October 2 at 11:00 pm 001 (part 1 of 1) 10 points What characteristics do atoms of carbon-12, carbon-13, and carbon-14 have in common? 1. same mass 2. same number of electrons 3. same number of protons 4. same number of neutrons and electrons 5. same number of protons and electrons 6. same number of neutrons and protons 7. same number of neutrons 002 (part 1 of 1) 10 points The chemistry of an element is largely deter- mined by 1. its number of total electrons. 2. its relative abundance. 3. its valence electrons. 4. its core electrons. 5. its mass. 003 (part 1 of 1) 10 points The oxygen 1- anion O- has how many total electrons and how many valence electrons? 1. 8; 9 2. 7; 6 3. 8; 7 4. 8; 6 5. 8; 8 6. 9; 8 7. 7; 5 8. 9; 7 9. 9; 9 004 (part 1 of 1) 10 points Describe the Lewis dot structure for Cl + . 1. three pairs of electrons 2. two pairs of electrons, two lone electrons 3. three pairs of electrons, one lone electron 4. two pairs of electrons, three lone elec- trons 5. two pairs of electrons, one lone electron 6. one pair of electrons, three lone electrons 7. one pair of electrons, two lone electrons 005 (part 1 of 1) 10 points How many valence electrons are in a silicon atom?...
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Chem HW 4 - Marek, Erin Homework 4 Due: Oct 2 2007, 11:00...

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