Question

The compound having least covalent nature is:

• A. $AlC{l}_3$
• B. $MgC{l}_2$
• C. $NaCl$
• D. $KCl$

Answer 1

The correct option is D $KCl$

The anion Chlorine is common in all molecules. Smaller the size of cation and greater the charge, more is the covalent character. $NaCl$ and $KCl$ have lesser charge, and among these, potassium ions have a greater size than sodium ions. Thus, $KCl$ is least covalent.