Chemistry: Concepts and Applications

Chapter 8: Periodic Properties of the Elements

Problem of the Week

 
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Teachers Notes:

Problem 1:
Iridium, atomic number = 77, is a transition element located in period and group 8B.

Problem 2:
[Xe]6s24f145d7

Problem 3:
Iridium would exhibit magnetism because of unpaired d electrons.

Problem 4:
Because iridium is corrosion-resistant it would be insoluble in groundwater. Therefore, the iridium atoms would tend to remain in the sediment instead of being transported in water solutions as metallic ions.

A fun Web site to review families of elements:
http://www.bpreid.com/applets/periodicNoWait.html

A periodic table quiz:
http://www.ilpi.com/genchem/periodicquiz.html


 

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