Question

The most covalent halide is:

• A. $Al{F}_3$
• B. $Al{Cl}_3$
• C. $Al{Br}_3$
• D. $Al{I}_3$

Answer 1

Answer: (D)

$Al{I}_3$

According to Fajans rule larger the size of anion,more covalent will be the bond . So, according to this most covalent halide is iodide as because it is the least electronegative among all the halides,greater size of halide anion,so in a covalent compound it has the least polarising