Borax in its crystal possess
$3$ tetrahedral unit
$2$ tetrahedral and $2$ planar triangular units
$3$ tetrahedral and $2$ planar triangular units
all tetrahedral units
Conc. $HN{O_3}$
Covalent electron deficient hydride is formed by
Which of the following is correct
Choose the Incorrect statement/ reaction
The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite $(N{a_3}Al{F_6})$ is