In the borax bead test,which of the following compounds is formed?

Explain the atomic radius of elements of the boron family.

The number of $P-H$ bond$(s)$ in $H_3PO_2, H_3PO_3$ and $H_3PO_4$,respectively,is

In the following reaction,assign the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$H_4\underline{P}_2O_5 + H_2O \longrightarrow \text{Products}$

The structure of diborane $(B_2H_6)$ contains :-

Which of the following reactions is used to prepare borazine?