Name the metals with which $Al$ can form alloys.

Which hydrated elements of group $13$ are found as polymers in nature?

$BCl_3$ exists as a monomer,whereas $AlCl_3$ is dimerized through halogen bridging. Give reason. Explain the structure of the dimer of $AlCl_3$ also.

Which one of the following elements does not form triiodide on reacting with iodine?

When borax is dissolved in water,it gives an alkaline solution. The alkaline solution consists of the following products:

Boric acid,$H_3BO_3$,is a/an ....