101AExam3

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Published on 31 Jan 2019
School
ASU
Department
Chemistry
Course
CHM 101
Professor
CHM-101-A Exam 3 Version 1
November 2, 2006
Copyright 2006 by James P. Birk 1
1. Which of the following statements regarding electromagnetic radiation is incorrect?
A. Each type of electromagnetic radiation has its own characteristic range of wavelengths
and frequencies.
B. The energy of electromagnetic radiation is directly proportional to its frequency.
C. The wavelength of electromagnetic radiation is inversely proportional to its frequency.
D. The visible portion of the electromagnetic spectrum has the lowest energy of any of
the types of electromagnetic radiation.
E. The distance between two corresponding points on a wave is its wavelength.
2. Which of the following statements regarding orbitals is correct?
A. A 2p orbital is smaller than a 3p orbital.
B. A 1s orbital can be represented as a two-dimensional circle centered around the
nucleus of an atom.
C. The p orbitals always come in sets of four.
D. There is no difference between the orbitals of the modern model of the atom and the
orbits of the Bohr model of the atom.
E. The d orbitals always have three lobes.
3. When completing the orbital diagram for the element silicon, which of the following
statements is correct?
A. There are no electrons in the 3d sublevel.
B. The 2p sublevel is not full.
C. There are no unpaired electrons in the 3p sublevel.
D. There are five electrons in the third energy level.
E. There are no electrons in the 3s sublevel.
4. The following orbital diagram corresponds to the element___________.
A. P
B. Si
C. Br
D. Cl
E. S
5. Elements that have five electrons in the highest-energy p sublevel in their ground state are
called:
A. alkali metals.
B. noble gases.
C. halogens.
D. transition metals.
E. alkaline earth metals.
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CHM-101-A Exam 3 Version 1
November 2, 2006
Copyright 2006 by James P. Birk 2
6. The element that has the abbreviated electron configuration [Ne]3s23p2 is:
A. Al
B. Si
C. P
D. Cl
E. Ar
7. The electron configuration 1s22s22p63s23p6 applies to all of the following species except:
A. Ca2+
B. K+
C. Na+
D. Ar
E. Cl
8. Rank the following elements in order of increasing ionization energy: F, P, Mg, Cs
A. Cs < Mg < P < F
B. Cs < Mg < F < P
C. P < Mg < F < Cs
D. Cs < F < Mg < P
E. F < P < Mg < Cs
9. Rank the following elements in order of increasing atomic size: F, P, Mg, Cs
A. Cs < Mg < F < P
B. F < P < Mg < Cs
C. Cs < F < Mg < P
D. P < Mg < F < Cs
E. Cs < Mg < P < F
10. Which of the following compounds is likely to have covalent bonds?
A. NaCl
B. CO
C. LiF
D. MgO
E. CaBr2
11. Which of the following compounds is likely to have a relatively high boiling point?
A. CoCl3
B. NO2
C. NH3
D. CO
E. CH4
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CHM-101-A Exam 3 Version 1
November 2, 2006
Copyright 2006 by James P. Birk 3
12. Using periodic trends, arrange the following atoms in order of increasing electronegativity:
Cl, Si, Ga, Sr
A. Sr < Ga < Si < Cl
B. Sr > Ga < Cl < Si
C. Si < Ga < Sr < Cl
D. Si < Cl < Ga < Sr
E. Cl < Si < Ga < Sr
13. Arrange the following bonds in order of increasing polarity: F-F, F-C, F-O, F-N
A. F-F < F-C < F-O < F-N
B. F-N < F-O < F-F < F-C
C. F-F < F-O < F-N < F-C
D. F-O < F-N < F-F < F-C
E. F-N < F-C < F-O < F-F
14. The correctly drawn Lewis formula for CBr4 will have __________.
A. 5 single bonds
B. 4 single bonds
C. 4 single bonds and 1 pair of nonbonding electrons on the carbon atom
D. 4 single bonds and 2 pairs of nonbonding electrons on the carbon atom
E. 4 single bonds and 3 pairs of nonbonding electrons on the carbon atom
15. Which one of the following molecules would exhibit resonance?
A. O2
B. H2S
C. Cl2
D. CH4
E. SO2
16. Which of these molecules has a violation of the octet rule?
A. NF3
B. PCl5
C. Br2
D. CO
E. OF2
17. Predict the molecular shape and give the approximate bond angles of the PCl3 molecule.
A. linear, 180o
B. bent, 120o
C. tetrahedral, 109.5o
D. trigonal planar, 120o
E. trigonal pyramidal, 109.5o
18. Which one of the following molecules is polar?
A. BeF2
B. CO2
C. CCl4
D. SO3
E. H2S
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Document Summary

Version 1: using periodic trends, arrange the following atoms in order of increasing electronegativity: Version 1: the "before" image in the figure shows the initial condition of a gas at a certain temperature in a container with a movable piston. Version 1: the figure shows two balloons. What volume of co2 would be formed if 8. 00 l of propane burns, assuming that all of the gases are under the same conditions: 12. 0 l, 24. 0 l, 3. 00 l, 4. 80 l, 8. 00 l. Version 2: using periodic trends, arrange the following atoms in order of increasing electronegativity: Version 2: the "before" image in the figure shows the initial condition of a gas at a certain temperature in a container with a movable piston. Version 2: the figure shows two balloons. They are at the same temperature and pressure, and contain equal volumes of gas, but one is floating, and the other is not.

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