1.

Give reason: Benzene has zero dipole moment and has no dipole-dipole forces yet it exists in liquid state.

Answer»
  • Benzene (C6H6) is nonpolar molecule and has zero dipole moment.
  • In benzene, only London forces exist due to momentary dipoles.
  • The strength of London forces increases with increase in molecular size, molecular mass and number of electrons present in an atom or molecule.
  • Hence, due to the presence of London forces, benzene exists in liquid state.


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