3.5.1.0: Molecular Shape and Polarity (Problems)
- Page ID
- 210719
PROBLEM \(\PageIndex{1}\)
Explain how a molecule that contains polar bonds can be nonpolar.
- Answer
-
As long as the polar bonds are compensated (for example. two identical atoms are found directly across the central atom from one another), the molecule can be nonpolar.
PROBLEM \(\PageIndex{2}\)
Which of the following molecules and ions contain polar bonds? Which of these molecules and ions have dipole moments?
a. ClF5
b. \(\ce{ClO2-}\)
c. \(\ce{TeCl4^2-}\)
d. PCl3
e. SeF4
f. \(\ce{PH2-}\)
g. XeF2
- Answer
-
All of these molecules and ions contain polar bonds. Only ClF5, \(\ce{ClO2-}\), PCl3, SeF4, and \(\ce{PH2-}\) have dipole moments.
PROBLEM \(\PageIndex{3}\)
Which of the following molecules have dipole moments?
a. CS2
b. SeS2
c. CCl2F2
d. PCl3 (P is the central atom)
e. ClNO (N is the central atom)
- Answer
-
SeS2, CCl2F2, PCl3, and ClNO all have dipole moments.
PROBLEM \(\PageIndex{4}\)
The molecule XF3 has a dipole moment. Is X boron or phosphorus?
- Answer
-
P
PROBLEM \(\PageIndex{5}\)
The molecule XCl2 has a dipole moment. Is X beryllium or sulfur?
- Answer
-
S
PROBLEM \(\PageIndex{6}\)
Is the Cl2BBCl2 molecule polar or nonpolar?
- Answer
-
nonpolar
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Contributors and Attributions
Paul Flowers (University of North Carolina - Pembroke), Klaus Theopold (University of Delaware) and Richard Langley (Stephen F. Austin State University) with contributing authors. Textbook content produced by OpenStax College is licensed under a Creative Commons Attribution License 4.0 license. Download for free at http://cnx.org/contents/85abf193-2bd...a7ac8df6@9.110).
- Adelaide Clark, Oregon Institute of Technology
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