`XeF_(6)` dissolves in anhydrous `HF` to give a good conducting solution which contains:

A monoatomic gas reacts with fluorine to form a fluoride which dissolve in HF to give a conducting solution. The fluoride is

XeF_(6) + HF to

Alkali metals dissolve in ammonia to give a blue solution which is conducting due to

Substance which give good conducting aqueous solution are called :

Chromyl chloride when dissolves in NaOH solution gives yellow solution. The yellow solution contains

Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF_3 is bubbled through. Give reasons.