TA practice quiz 2 key

TA practice quiz 2 key - CH301 Fall 2010 Practice Quiz 2TA...

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CH301 Fall 2010 Practice Quiz 2—TA Edition Answer Key 1. Which element below is not paired with its correct electron configuration? 1. Cl, [Ne] 3s 2 3p 5 2. Ge, [Ar] 4s 2 3d 10 4p 1 3. Ra, [Rn] 7s 2 4. Ta, [Xe] 6s 2 5d 3 5. Fe, [Rn] 5f 12 7s 2 The correct structure for Tantalum is [Xe] 6s 2 4f 14 5d 3 . 2. What is the correct electron configuration for Os + ? 1. [Rn] 6s 2 4f 14 5d 5 2. [Xe] 6s 2 4f 14 5d 5 3. [Xe] 6s 1 4f 14 5d 5 4. [Xe] 6s 1 5d 5 5. [Kr] 6s 1 4f 14 5d 5 Os + is isoelectronic with the neutral atom rhenium (Re), a d 5 , so not subject to exceptions. The electron configuration is thus that of Re, [Xe] 6s 2 4f 14 5d 5 . 3. Which of the following is not like the others? 1. ionization energy 2. electron affinity 3. metallic character 4. electronegativty All of theses are periodic trends, but metallic character is the only one of the four choices that doesn’t start low and increase as you move up and to the right across the periodic table. 4. Rank the following species from smallest to largest radius:V
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This note was uploaded on 10/10/2011 for the course CH 50995 taught by Professor Laude during the Fall '10 term at University of Texas.

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TA practice quiz 2 key - CH301 Fall 2010 Practice Quiz 2TA...

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