1. Chem 212 Clicker Quiz #1 Name________________ 4 February, 2011 Created by Margret J. Geselbracht, Reed College (mgeselbr@reed.edu) and posted on VIPEr (www.ionicviper.org) on February 6, 2011. Copyright Margret J. Geselbracht 2011. This work is licensed under the Creative Commons Attribution Non-commercial Share Alike License. To view a copy of this license visit http://creativecommons.org/about/license/.mgeselbr@reed.eduwww.ionicviper.org http://creativecommons.org/about/license/

2. Chalcophiles are… 1.Elements such as Fe and Ni that are found in the metallic core of the earth. 2.Elements that are “rock-loving” and associate with silicates in the earth’s mantle and crust. 3.Elements that combine readily with S, Se, and As in the earth’s crust. 4.Elements that exist as gases in the earth’s atmosphere. 0

3. Which of these molecules is used as an anti-cancer drug? 1. 2. 3. 4. 0 

4. Consider this molecule containing a Cr–C quadruple bond. Which of the following is true? 1.The octahedral structure around Cr stabilizes the quadruple bond. 2.Unlike in organic chemistry, carbon can form quadruple bonds to a metal in inorganic chemistry. 3.This molecule would not exist, because alkyls (i.e. CH 3 ) are never found in inorganic molecules. 4.This molecule would not exist, because C lacks the appropriate orbitals to make a delta (  ) bond to Cr. 0

5. Ziegler and Natta, played what important historical role in inorganic chemistry? 1.They correctly analyzed the H-atom emission spectrum that led to the Bohr Model of the atom. 2.They were key scientists on the Manhattan Project in World War II. 3.They discovered new catalysts for the polymerization of ethylene to form linear chains of polyethylene. 4.They discovered new catalysts for “fixing” N 2 to form NH 3, mimicking the enzyme nitrogenase. 0

6. For elements with Z < 26… 1.They were all synthesized within the first second after the Big Bang. 2.Neutron-rich isotopes are more stable than isotopes with equal numbers of neutrons and protons. 3.Elements with even number Z values are more abundant as they are the radioactive decay products of 56 Fe. 4.Elements with even number Z values are more abundant as they are the products of 4 He fusion reactions. 0 FIg. 1.9 from Miessler & Tarr, 4th Edition Removed for copyright reasons