Kernite and cryolite are the minerals of two elements $X$ and $Z$. Respectively $X$ and $Z$ are

An element $X$ which occurs in the first short period has an outer electronic structure $s^2p^1$. What are the formula and acid-base character of its oxides?

Identify the incorrect statement about the group $13$ elements.

Boron can be obtained by various methods but not by

Anhydrous $AlCl_3$ cannot be obtained from which of the following reactions?

Choose the incorrect statement/reaction.