Question

$AlCl_3$ is covalent while $AlF_3$ is ionic. This fact can be justified on the basis of

• A. Valence bond theory
• B. Crystal structure
• C. Lattice energy
• D. Fazan's Rule

Answer 1

Answer: (D)

Fazan's Rule

Answer 2

Smaller the size of cation and larger the size of the anion, more is the covalent character.