Question

the most covalent halide is
1)AlF3
2)AlCl3
3)AlBr3
4)AlI3
why? ​

Answer 1

Answer:

alf3 as it has the the shared pair of electrons

Answer 2

Answer:

(d) AlI3

Explanation:

Size of anion ∝ covalent character

So, as we go down the group, size of the elements increase.

Hence, among F, Cl, Br and I ; Iodine possess larger size.

Therefore halide formed by Iodine will be most covalent halide.