Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. How can you explain a higher stability of BCI_3 as compared to TiCI_3?

Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of t

1.	Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. How can you explain a higher stability of BCI_3 as compared to TiCI_3?
Answer» Answer :In the group, inert pair effect is MAXIMUM in Tl and hense Tl SHOWS mainly +1 state. That is TICl is stable, not `TICl_3`. HOWEVER, +3 state is stable for B and hence `BCl_3` is quite stable.