The reactivity of borazole is higher than that of benzene because ...

On adding ammonium hydroxide solution to $Al_2(SO_4)_3$ (aq) :

Two students were given the task to prepare an adduct $NH_3 \to BH_3$ at low temperature :-
Student $I$ :- She mixed $B_2H_6$ and $NH_3$
Student $II$ :- He mixed $B_2H_6$ with $THF$ followed by addition of $NH_3$
Which student is expected to get the $CORRECT$ final product?

Match List-$I$ with List-$II$. Choose the correct answer from the options given below:

List-$I$	List-$II$
$A$. Melting point $[K]$	$I$. $Tl > In > Ga > Al > B$
$B$. Ionic Radius $[M^{+3} / pm]$	$II$. $B > Tl > Al \approx Ga > In$
$C$. $\Delta_{i} H_1 [kJ \ mol^{-1}]$	$III$. $Tl > In > Al > Ga > B$
$D$. Atomic Radius $[pm]$	$IV$. $B > Al > Tl > In > Ga$

When $Al$ is added to $KOH$ solution,what happens?

In diborane,the $H-B-H$ bond angle is $120^o$. The hybridization of boron is likely to be