Suggest the most important type of intermolecular attractive interaction in the following pairs :
(i) n - hexane and n - octane
(ii) `I_(2)` and `C Cl_(4)`
(iii) `NaClO_(4)` and water
(iv) Methanol and acetone
(v) Acetonitrile `(CH_(3)CN)` and acetone `(C_(3)H_(6)O)`.

Explanation

(i) Van der wall forces of attraction as both are non - polar.
(ii) Van der Wall forces of attraction as they are non - polar.
(iii) Ion - diople interaction as `NaClO_(4)` is ionic in nature.
(iv) Dipole - dipole interaction as they are polar.
(v) Dipole - dipole interaction as they are polar.