Question

Considering greater polarization in $LiCl$ compared to that of $NaCl$, which of the following statements you would expect to be wrong ?

• A. $LiCl$ has lower melting point than that of $NaCl$
• B. $LiCl$ dissolves more in organic solvents
• C. $LiCl$ will ionize in water more than $NaCl$
• D. LiCl has more covalent character than NaCl

Answer 1

The correct option is C $LiCl$ will ionize in water more than $NaCl$

According to Fajan's rules, higher the polarization, higher is the covalent character.
(i) Covalent compound have lower melting point than ionic
(ii) Covalent compounds dissolve more in organic non polar solvent than ionic.
(iii) Covalent compounds are less conductive than ionic.
(iv) Covalent compounds will ionise less than ionic in water
Since, $LiCl$ is covalent while $NaCl$ is ionic. As a result, $LiCl$ will not ionize in water more than $NaCl$.