Question

Statement-I: $LiCl$ is predominantly a covalent compound.
Statement-II: Electronegativity difference between $Li$ and $Cl$ is too small.

• A. Statement-I is true; Statement-II is true; Statement-II is the correct explanation for Statement-I
• B. Statement-I is true; Statement-II is true; Statement-II is not the correct explanation for Statement-I
• C. Statement-I is true; Statement-II is false
• D. Statement-I is false; Statement-II is true

Answer 1

Answer: (C)

Statement-I is true; Statement-II is false

Statement-I: LiCI is predominantly a covalent compound, True.
Statement-II: Electronegativity difference between Li and CI is too small, False.
According to Fajan rule, the smaller the cation, the more is the polarizing power and, therefore, more is the polarization which leads to more covalent character. Due to the smaller size of lithium, it forms covalent chloride. There is a high difference between the electronegativities of Li and Cl.
So Statement-I is true; Statement-II is false.
Hence option C is correct.