A highly concentrated solution (about 5 M) of an alkali metal in ammonia (pick the odd one out)

A highly concentrated solution (about 5 M) of an alkali metal in ammon

1.	A highly concentrated solution (about 5 M) of an alkali metal in ammonia (pick the odd one out)
Answer» is called EXPANDED metal is highly unstable is diamagnetic in NATURE is bronze like in colour. SOLUTION :A highly CONCENTRATED solution of alkali metals (about 5M) in ammonia is meta-stable. It is called expanded metal. It is diamagnetic in nature. It is bronze like APPEARANCE.