in which of the following substance you expect strongest and in which weakest intermolecular force?why

water, alcohol, sugar , sodium chloride and carbon dioxide

In sugar the intermolecular force would be strongest while in carbon di oxide it would be weakest Because sugar is in solid state. In sugar The molecules are compact and have very less kinetic energy, which is also the reason that they it has a definite shapes, distinct boundaries and definite shape. While CO2 is in gaseous state.  The molecules are loose and have high K.E, which is also the reason that they have a non definite shapes, no distinct boundaries and non definite volume. 

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