Which elements of group $13$ possess both $+1$ and $+3$ oxidation state?
$\mathrm{Ga}, \mathrm{In}, \mathrm{Tl}$
Write preparation of diborane and give physical and chemical properties of it.
In the reaction ${B_2}{O_3} + C + C{l_2} \to A + CO.$ The $A$ is
Hydrated $AlCl_3$ is used as :
When borax is heated with $CoO$ on a platinum loop, blue coloured bead formed is largely due to
Which of the following oxides is acidic in nature?
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