Which of the following is a non-metal
Gallium
Indium
Boron
Aluminium
The tendency to form monovalent compounds among the Group $13$ elements is correctly exhibited in :
Explain why the following compounds behave as Lewis acids ?
$(A)$ $BCl_3$ $(B)$ $AlCl_3$
Identify the reaction which does not liberate hydrogen
Give suitable laboratory preparation for diborane.
In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to