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Bond Polarity (Grade 10)

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Bond Polarity

Instructions: The following questions require the use of a reference table that contains the electronegativities of different elements.

1. 
Which of the following covalent bonds can be classified as being the least polar?
  1. H-Cl
  2. H-H
  3. H-F
  4. H-Br
 
2. 
Which of the following ionic bonds has the greatest degree of polarity?
  1. Li-O
  2. Li-F
  3. Na-Cl
  4. Na-Br
3. 
Which of the following types of bonds present in hydrogen bonding is most polar?
  1. H-O
  2. H-F
  3. H-N
  4. Both (a) and (b) are the most polar
 
4. 
Based on considerations of bond polarity, how could the bonds in [math] C O_2 [/math] be classified?
  1. nonpolar covalent
  2. ionic
  3. polar covalent
  4. none of the above
5. 
The chemical formula for propanol is [math] C_3 H_7 OH [/math]. The bond between which two atoms in this compound is least polar?
  1. C-O
  2. O-H
  3. C-H
  4. C-C
 
6. 
Which of the following atoms, when bonded to an atom of fluorine, would produce a bond with the greatest degree of polarity?
  1. sulfur
  2. nitrogen
  3. hydrogen
  4. bromine
7. 
What is the most likely electronegativity difference of a nonpolar covalent bond?
  1. 1.2
  2. 0
  3. 0.8
  4. 2.1
 
8. 
Which of the following statements correctly describes how the bond polarity of NaCl compares to that of [math] H_2 S [/math]?
  1. It has a weaker bond polarity
  2. It has a stronger bond polarity
  3. They have equal bond polarities
  4. There is not enough information to answer this question
9. 
The C=S bond in [math] CS_2 [/math] is more polar than the Cl-Cl bond in [math] Cl_2 [/math] is.
  1. True
  2. False
 
10. 
Explain why the bond between hydrogen and sulfur in [math] H_2 S [/math] is more polar than the bond between nitrogen and oxygen in [math] N O_2 [/math] is.



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