The intermolecular forces of attraction (i.e., H-bonding and van der waal's forces) exist among polar and non-polar species which effect melting point, boiling point, solubility and viscosity of covalent compounds :
Q. Select the incorrect order of boiling point between the following compounds:

Options

A. `N_(3)HltCH_(3) N_(3)`
B. `Me_(2)SO_(4)ltH_(2)SO_(4)`
C. `Me_(3)BO_(3)ltB(OH)_(3)`
D. `BF_(3)ltBI_(3)`

Answer

A

Explanation

`to` Boiling point of `HN_(3)gtCH_(3)N_(3)` as in hydrazoic acid `(HN_(3))` intermolecular H-bonding occurs and its bond energy is higher than weak dipole-dipole interactions present in `CH_(3)N_(3)`
`to`Boiling point of `BI_(3)` is greater than that of `BF_(3)` as molecular weight of `BI_(3)` is higherhtan that of `BF_(3)` .
`to`Due to intermolecular H-bonding in `H_(2)SO_(4)` its boiling point is higher than `Me_(2)SO_(4)`.
`to` Similarly due to intermolecular H-bonding in `B(OH)_(3)` its boiling point than that of `Me_(2)BO_(3)`.