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Intermolecular forces (London forces (A molecule gathers a slight partial…
Intermolecular forces
London forces
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These partial charges attract other molecules of like kind and forms a weak force of attraction. This force of attraction is called the LONDON FORCE
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They have a low boiling point and are often seen as a gas- as a small amount of energy is needed to overcome the LONDON FORCE.
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However some molecules are solid such as I2. This is due to the LONDON FORCE being stronger due to a stronger partial charge and INSTANTANEOUS DIPOLE. Therefore more energy is needed to break the I2 molecule.
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Hydrogen bonding
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A HYDROGEN BOND is also stronger than London forces as the partial charges are larger and permanent.
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Examples are H2O, HF and NH3
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