Maximum number of atoms which are present in one plane of $H_3BO_3$?
$4$
$5$
$6$
$7$
In the commercial electrochemical process for aluminium extraction, the electrolyte used is
The weakest Lewis acid is
Which metal is protected by a layer of its own oxide
Mention isotops of boron.
Which hydrated elements of group $13$ are found as polymer in nature ?