Exam 2 SPRING 2005 ANSWERS updated

Exam 2 SPRING 2005 ANSWERS updated - Chem 105 Exam II...

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Chem 105 Exam II Spring 2005 Name: _____________________________________ 1) Rank the following from LOWEST frequency to HIGHEST: microwave, blue visible light, x-rays, red visible light FM radio waves, gamma rays. (5 pts) LOWEST ------------------------------------------------------------------------HIGHEST FM Radio, microwave, red, blue, xray, gamma ray 2) Give a CONDENSED electron configuration for Thallium and determine the number of valence electrons. (5 pts) [Xe] 6s 2 4f 14 5d 10 6p 1 Three valence electrons 3) Give a full electron configuration and use a box-type diagram to determine if Rhenium is diamagnetic or paramagnetic. State clearly your conclusion. (10 pts) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 5 __↑__ __↑___ __↑___ __↑___ __↑___ PARAmagnetic 5 d 4) Give a CONDENSED electron configuration for a Mercury (II) ion (5 pts) [Xe]4f 14 5d 10 5) Predict which has a larger radius: O -2 or Ba +2 – justify your answer (5 pts) Ba +2 is much bigger due to much larger valence shell 1
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This test prep was uploaded on 04/20/2008 for the course CHEM 105 taught by Professor F during the Fall '05 term at Grove City.

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Exam 2 SPRING 2005 ANSWERS updated - Chem 105 Exam II...

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