Transcript Document

Chem 212
Clicker Quiz #1
Name________________
4 February, 2011
Created by Margret J. Geselbracht, Reed College ([email protected]) and posted on VIPEr (www.ionicviper.org)
on February 6, 2011. Copyright Margret J. Geselbracht 2011. This work is licensed under the Creative Commons
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0
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
Which of these molecules is used as an
anti-cancer drug?

1.
Cl
2.
NH3
Cl
Pt
Cl
3.
NH3
Pt
NH3
H 3N
4.
Fe
Cl
O
C
0
Consider this molecule containing
a Cr–C quadruple bond.
Which of the following is true?
I
O
1.
Cr
O
C
CH3
C
C
O
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. CH3) 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
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” N2 to form
NH3, mimicking the enzyme nitrogenase.
0
For elements with
Z < 26…
FIg. 1.9 from Miessler & Tarr, 4th Edition
Removed for copyright reasons
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 56Fe.
4.
Elements with even number Z values are more abundant as they are the
products of 4He fusion reactions.