6 Physical
Physical
Physical
Physical
Physical
Properties
Properties
Properties
Properties
Properties
Rationalised 2023-24
168
Chemistry
Melting and boiling points
Methyl chloride, methyl bromide, ethyl chloride and some
chlorofluoromethanes are gases at room temperature Higher members
are liquids or solids As we have already learnt, molecules of organic
halogen compounds are generally polar Due to greater polarity as well
as higher molecular mass as compared to the parent hydrocarbon, the
intermolecular forces of attraction (dipole-dipole and van der Waals)
are stronger in the halogen derivatives