An element $A$ dissolves both in acid and alkali. It is an example of
Allotropic nature of $A$
Dimorphic nature of $A$
Amorphous nature of $A$
Amphoteric nature of $A$
Anhydrous aluminium chloride $(Al_2Cl_6)$ is covalent compound and soluble in water giving
Borax on heating strongly above its melting point melts to a liquid, then solidifies to a transparent mass commonly known as Borax Bead. The transparent glassy mass consists of :
Taking stability as the factor, which one of the following represents correct relationship?
Which elements of group $13$, except $B$, can form tetrahedral and octahedral complex in aqueous medium ?
Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out in the presence of