Verified Answer :

B, molecules are ionic bonding this is covalent

Answer:

NaCl does not contain molecules

Explanation:

Molecules are made of multiple atoms bonded together to form a single entity.

In \(H_{2}\) (H-H), two hydrogen atoms are bonded together through a covalent bond. Hence it is a molecule.

In \(CO_{2}\) (O=C=O), one carbon atom and two oxygen atoms are bonded together through double bond. Hence it is molecule

In\(H_{2}O\) (H-O-H), one oxygen atoms and two hydrogen atoms are bonded together through single bond. Hence it is a molecule.

In NaCl, \(Na^{+} and Cl^{-}\) ions are held together through ionic attraction forces. Here no actual bond exists between \(Na^{+} and Cl^{-}\). Both \(Na^{+} and Cl^{-}\) remain present as individual ions.

Hence NaCl does not contain molecules