Question

Why Bicl5 does not exist ?​

Answer 1

Answer is:-

According to which as we go down the group the size of the atom increases and as a result stability of +5 oxidation state is reduced and +3 oxidation state id dominant and thus BiCl5 doesn't exist.

Hope it helps you dear......xd

Answer 2

Answer:

Bismuth due to inert pair effect exist with only +3 oxidation state. +5 oxidation state is uncommon for Bi. So bismuth does not form pentahalide. But due to the small size and high electronegativity of fluorine only BiF exist.

According to which as we go down the group the size of the atom increases and as a result stability of +5 oxidation state is reduced and +3 oxidation state id dominant and thus BiCl5 doesn't exist.