Group $13$ elements show $+1$ and $+3$ oxidation states. Relative stability of $+3$ oxidation state may be given as
$Tl^{3+} > In^{3+} > Ga^{3+} > Al^{3+} > B^{3+}$
$B^{3+} > Al^{3+} > Ga^{3+} > In^{3+} > Tl^{3+}$
$Al^{3+} > Ga^{3+} > Tl^{3+} > In^{3+} > B^{3+}$
$Al^{3+} > B^{3+} > Ga^{3+} > Tl^{3+} > In^{3+}$
Colour of the bead in borax bead test is mainly due to the formation of
The element which exists in liquid state for a wide range of temperature and can be used for measuring high temperature is :-
Hydrated $AlCl_3$ is used as :
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 ?
Explain what happens when boric acid is heated.