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Unformatted text preview: Version 047 Quiz 2 sparks (51150) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points Which one of the following pairs of elements would be expected to form an ionic com- pound? 1. As, Br 2. H, C 3. C, I 4. S, F 5. Rb, Cl correct Explanation: Metals and nonmetals react to form ionic compounds. Nonmetals and nonmetals react to form covalent compounds. Rb is a metal and Cl is a nonmetal, so they will form an ionic compound. S, F, H, C, As, Br, and I are all nonmetals. 002 10.0 points Name the ionic compound SnF 2 . 1. tin(II) fluoride correct 2. scandium(II) fluorate 3. tin(II) fluorate 4. selenium(II) fluoride 5. selenium(II) fluorate 6. selenium(II) difluoride 7. tin(I) difluoride Explanation: Ionic compound names follow the conven- tion: cation name followed by the anion name. 003 10.0 points Name the compound SO 3 . 1. sulfate 2. sulfur(III) oxide 3. sulfur oxide 4. sulfur trioxide correct Explanation: SO 3 is a covalent compound and is therefore named using prefixes to indicate the number of each type of atom. The prefix for three is tri so this molecule is named sulfur trioxide. 004 10.0 points A comparison of the electron configurations of zirconium (Zr) and Molybdenum (Mo) in- dicates that 1. Mo has three more d electron and the same number of s electrons as Zr. 2. Mo has three more d electrons and one less s electron than Zr. correct 3. Mo has one more d electron and one more s electron than Zr. 4. Mo has two more d electron and one less s electron than Zr....
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- Spring '12