Boron halides are Lewis acids because.....

Substance $X$ reacts with an aqueous solution of $NaOH$ to form $Y$ and releases $H_2$ gas. When an aqueous solution of $Y$ is heated at $323 \; K - 333 \; K$ and $CO_2$ gas is passed through it,it yields $Al_2O_3 \cdot xH_2O$ (often represented as $Al(OH)_3$) and $Z$. Heating $Z$ at $1200^{\circ}C$ produces $Al_2O_3$. Identify $X, Y,$ and $Z$.

Diborane on hydrolysis gives a compound $X$. The correct statements about $X$ are
$I$. It is a tribasic acid
$II$. It is a weak monobasic acid
$III$. It has a layer structure
$IV$. It is highly soluble in water

Consider the compounds,$BCl_3$ and $CCl_4$. How will they behave with water? Justify.

$Na_2B_4O_7 \stackrel{\text{heat}}{\longrightarrow} X + NaBO_2$
In the above reaction,the product $X$ is:

$AlCl_3$ fumes in moist air because.......