This is not a question from the text, however, I need helpnone the less!! Is the

Question

This is not a question from the text, however, I need helpnone the less!! Is there any neat tricks or tips on how to distinguishdipole-dipole from london dispersion forces? I keep gettingthese two wrong and I have a test thursday that will be basedsolely on IMF. I thought I knew what a dipole was, but now Iquestion myself. It is any atom or molecule with a charge,correct? Please help!!! Thanks.. This is not a question from the text, however, I need helpnone the less!! Is there any neat tricks or tips on how to distinguishdipole-dipole from london dispersion forces? I keep gettingthese two wrong and I have a test thursday that will be basedsolely on IMF. I thought I knew what a dipole was, but now Iquestion myself. It is any atom or molecule with a charge,correct? Please help!!! Thanks..

Explanation / Answer

      Dipole refers to theseperation of charges between the covalently bonded atoms.     E.g.      H-Cl Dipole - dipole forces : These are the forces ofattraction between the polar molecules . The polar molecules posessa permanent dipolemoment. The partial positive and negative chargesat the end of the dipoloe cause the electrostatic force ofattraction between the molecules. E.g;   CH3F Dispersion forces : The attractive forces thatarise as aresult of the temperory dipoles induced in the atoms ormolecules.   The intermolecular forces present in the non polarmolecules are dispersion forces .    E.g: H2, N2 ,O2 , CCl4, He        HBr    dipole -dipoleforces and dispersion forces exist between themolecules.     NaCl     Ionicforces and dispersion forces      N2     Onlydispersion forces present

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