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?

  • AAlF3
  • BBF3
  • CCF4
  • DPF5
  • EPF3

Q2:

Which of the following molecules has a permanent dipole?

  • ACH22
  • BCS2
  • CCClF22
  • DSeS2
  • EXeF2

Q3:

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

  • AClF5
  • BXeF2
  • CPH2
  • DTeCl42
  • EClO2

Q4:

How can a molecule that contains polar bonds be nonpolar?

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

Q5:

Which of the following bonds is the most polar?

  • ACC
  • BNH
  • CCH
  • DClH
  • EBrH

Q6:

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

  • AN
  • BBr
  • CB
  • DI
  • EO

Q7:

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

  • AP
  • BO
  • CB
  • DC
  • EH

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