Question

Which of the following are not ionic compounds?

• A. $KCl$ and $HCl$
• B. $NaCl$ and $KCl$
• C. $CC{l}_4$ and $NaCl$
• D. $HCl$ and $CC{l}_4$

Answer 1

The correct option is D

$HCl$ and $CC{l}_4$

Ionic compounds:

• Ionic compounds are those compounds that are formed by ionic bonds that are formed by the complete transfer of electrons.
• Ionic compounds dissociate into their constituents ions when dissolved in water.

Covalent compounds:

• Covalent compounds are those compounds that consist of covalent bonds that are formed by the mutual sharing of electrons between atoms.
• Covalent compounds do dissociate into their constituents ions when dissolved in water.
• Covalent compounds dissolve in organic solvents like ether and alcohol.

Explanation for the correct option:

• Carbon tetrachloride$\left(CC{l}_4\right)$ is a covalent compound that is formed by the sharing of electrons between Carbon and chlorine atoms.
• Hydrochloric chloride gas$\left(HCl\right)$ is made of molecules that are held together by the covalent bonds between Hydrogen and chloride.

Explanation for the incorrect answer

Option A: $KCl$ and $HCl$

• Potassium chloride$\left(KCl\right)$is an ionic compound that dissociates into its ions in the aqueous solution.
• Hydrochloric chloride gas$\left(HCl\right)$ is made of molecules that are held together by the covalent bonds between Hydrogen and chloride.

Option B: $NaCl$ and $KCl$

• Sodium chloride$\left(NaCl\right)$ and Potassium chloride$\left(KCl\right)$both are ionic compounds that dissociate into their ions in the aqueous solution.

Option C: $CC{l}_4$ and $NaCl$

• Sodium chloride$\left(NaCl\right)$ is an ionic compound that dissociates into its ions in the aqueous solution.
• Carbon tetrachloride$\left(CC{l}_4\right)$ is a covalent compound that is formed by the sharing of electrons between Carbon and chlorine atoms.

Therefore, the correct option is (D).