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CHEM 301 HW4 - Ramirez Josue Raul Homework 4 Due Oct 2 2007...

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Ramirez, Josue Raul – 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 number of electrons 2. same number of protons 3. same number of neutrons and protons 4. same number of neutrons 5. same number of neutrons and electrons 6. same mass 7. same number of protons and electrons 002 (part 1 of 1) 10 points The chemistry of an element is largely deter- mined by 1. its valence electrons. 2. its number of total electrons. 3. its relative abundance. 4. its mass. 5. its core electrons. 003 (part 1 of 1) 10 points The oxygen 1 - anion O - has how many total electrons and how many valence electrons? 1. 7; 5 2. 9; 7 3. 9; 8 4. 8; 8 5. 8; 9 6. 8; 7 7. 9; 9 8. 7; 6 9. 8; 6 004 (part 1 of 1) 10 points Describe the Lewis dot structure for Cl + . 1. three pairs of electrons 2. three pairs of electrons, one lone electron 3. one pair of electrons, two lone electrons 4. two pairs of electrons, three lone elec- trons 5. one pair of electrons, three lone electrons 6. two pairs of electrons, two lone electrons 7. two pairs of electrons, one lone electron 005 (part 1 of 1) 10 points How many valence electrons are in a silicon atom?
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