What is produced upon the hydrolysis of $AlCl_3$?

Two elements $X$ and $Y$ react with highly electropositive metals to form binary compounds,which upon hydrolysis yield borane and silane,respectively. What are $X$ and $Y$?

The element which has the least metallic character is ..........

In the following reaction,assign the state for the underlined atom in the product of complete hydrolysis at $R.T.$:
$H_4\underline{P}_2O_7 + H_2O \longrightarrow 2H_3PO_4$

Boron forms $BX_3$ type of halides. The correct increasing order of Lewis-acid strength of these halides is

Given below are two statements:
Statement $I$: Group $13$ trivalent halides get easily hydrolyzed by water due to their covalent nature.
Statement $II$: $AlCl_3$ upon hydrolysis in acidified aqueous solution forms octahedral $[Al(H_2O)_6]^{3+}$ ion.
In the light of the above statements,choose the correct answer from the options given below: