Though and are covalent molecules, their aqueous solutions conduct electricity, and this is due to
The formation of free ions
Explanation for Correct option :B)
The formation of free ions.
and molecules when dissolved in water or in aqueous solutions, they form free ions like and possess dative bonds in them. Due to these ions, they conduct electricity.
Explanation Incorrect options:
A)The presence of free electrons- is a wrong statement as there are no free electrons in and
C)The formation of hydrated compounds - is a wrong statement because, hydrated ions can be formed but not hydrated compounds.
D) Formation of a dative bond - s a wrong statement as formation of dative bond does not cause conduction of electricity.
Hence, B) is the correct option- and molecules though they are covalent but conduct electricity due to the presence of free ions.