Question

Which of the following is a molecular solid?

• A. $I_2$ crystals
• B. $NaCl$
• C. $KCl$
• D. All of the above.

Answer 1

The correct option is A $I_2$ crystals

In ionic solids, there will be strong electrostatic force between cations and anions.
Eg. $NaCl,KCl,etc.$

In molecular solids, molecules are the constituent particle. They are held together by both intramolecular bond and intermolecular force. The forces between these molecules (van der Waal Forces) are relatively weak. These have low melting points. Examples include:
$I_2\left(s\right),HCl\left(s\right),H_{3}B{O}_3\left(s\right),etc.$