Worksheet: Polar Bonds and Polar Molecules

In this worksheet, we will practice identifying polar bonds and molecules based on the differences in electronegativity of the elements involved.

Q1:

Which of the following molecules has a permanent dipole moment?

  • A C F 4
  • B B F 3
  • C P F 5
  • D A l F 3
  • E P F 3

Q2:

Which of the following molecules has a permanent dipole?

  • A C H 2 2
  • B C S 2
  • C C C l F 2 2
  • D S e S 2
  • E X e F 2

Q3:

Which of the following molecules and ions does not have a dipole moment?

  • A T e C l 4 2
  • B C l O 2
  • C C l F 5
  • D P H 2
  • E X e F 2

Q4:

How can a molecule that contains polar bonds be nonpolar?

  • AMolecules with polar bonds will always be polar overall.
  • BIf there is another polar bond somewhere in the molecule, pointing in the opposite direction
  • CIf there is hydrogen bonding
  • DIf the dipoles of the polar bonds are arranged such that they cancel each other out in the sum for the total dipole moment
  • EIf the molecule has mirror symmetry

Q5:

Which of the following bonds is the most polar?

  • A C C
  • B N H
  • C C H
  • D C l H
  • E B r H

Q6:

If directly bonded to sulfur, which of the following elements would produce a partial negative charge on the sulfur?

  • A B
  • B N
  • C O
  • D B r
  • E I

Q7:

If directly bonded to sulfur, which of the following elements would produce a partial positive charge on the sulfur?

  • A O
  • B P
  • C H
  • D C
  • E B

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