$Be$ and $Al$ exhibit many properties which are similar, but the two elements differ in :
In the extraction of aluminium, bauxite is dissolved in cryolite because
$B{\left( {OH} \right)_3} + NaOH \to NaB{O_2} + Na\left[ {B{{\left( {OH} \right)}_4}} \right] + {H_2}O$
How can this reaction is made to proceed in forward direction?
Aluminium hydroxide is soluble in excess of sodium hydroxide forming the ion
$BCl_3 + H_2O \longrightarrow$ Product, here product