Practice test 4 - Page 1 CHM 2045 Exam 4 Spring 2002...

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Page 1 CHM 2045 Exam 4 Spring 2002 Version A 1. There are _____ paired and _____ unpaired electrons in the Lewis symbol for a phosphorus atom. a. 4, 2 b. 2, 4 c. 2, 3 d. 4, 3 e. 0, 3 2. Which ion below has a noble gas electron configuration? a. Li 2+ b. Be 2+ c. B 2+ d. C 2+ e. N 2- 3. The only noble gas without eight valence electrons is ____________. a. Ar b. Ne c. He d. Kr e. all noble gases have eight valence electrons 4. For a given arrangement of ions, the lattice energy increases as ionic radius __________ and as ionic charge __________. a. decreases, increases b. increases, decreases c. increases, increases d. decreases, decreases e. This cannot be predicted. 5. The ion with the smallest diameter is _____. a. Br - b. Cl - c. I - d. F - e. O 2-
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Page 2 6. Which of the elements below has the largest electronegativity? a. Si b. Mg c. P d. S e. Na 7. Of the molecules below, the bond in _____ is the most polar. a. HBr
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This note was uploaded on 04/19/2008 for the course CHM 2045 taught by Professor Geiger during the Fall '08 term at University of Central Florida.

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Practice test 4 - Page 1 CHM 2045 Exam 4 Spring 2002...

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