Polar or Nonpolar Quiz

Example Questions From the Test

• 2Which sequence correctly orders these hydrogen-halogen bonds from least polar to most polar?
  • H–Br, H–F, H–I, H–Cl
  • H–F, H–Cl, H–Br, H–I
  • H–Cl, H–Br, H–I, H–F
  • H–I, H–Br, H–Cl, H–F
• 5In an H–F bond, toward which atom does the bond dipole point?
  • Toward the midpoint, because the electrons are shared equally
  • Toward hydrogen, because hydrogen has fewer electrons
  • Toward fluorine, because fluorine is more electronegative
  • Its direction alternates between hydrogen and fluorine
• 8Each C=O bond in CO₂ is polar. Why is the whole CO₂ molecule nonpolar?
  • Its two bond dipoles are equal and opposite in a linear molecule
  • Carbon and oxygen have identical electronegativities
  • Double bonds cannot contribute to molecular polarity
  • The carbon atom contains no lone pairs