Exam 1-1.4 - and the principle energy level of the valence...

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EXAM I Sample Exam 1-1 Dr. V. Williamson © Vickie M. Williamson 2007, All Rights Reserved 3 15. Mark each of the following as true or false. Which of the following is FALSE? A. A row could also be called a period. B. Column U contains mostly metals C. Column S is the alkali metals. D. Column Y is the halogens. E. Column T is the transition metals. 16. Atomic radius for the main—group elements generally decreases across a period because: A. effective nuclear charge increases across a period B. the principle energy level of the valence orbitals increases C. effective nuclear charge decreases across a period D. both effective nuclear charge increases across a period
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Unformatted text preview: and the principle energy level of the valence orbitals increases E. effective nuclear charge zigzags across a period 17. What is the molecular formula of a compound with an empirical formula of NO 2 and formula weight of 92 amu? A. N 2 4 B. NO C. N 2 0 D. N 3 6 E. NO 2 18. (6.5pts) Which point was not a part of Daltons atomic theory? A. Some atoms may emit nuclear radiation. B. In a chemical reaction, atoms are only rearranged. C. Matter is composed of indestructible particles called atoms. D. All atoms of a given element are alike. E. Atoms combine to form compounds. Key question 5.5pts each 1 B (C=3pts) 2 E 3 A 4 E...
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This note was uploaded on 02/18/2012 for the course CHEM 101 taught by Professor Williamson during the Fall '08 term at Texas A&M.

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