How the colour and magnetic property of solutions of alkali metals in liquid NH_(2) changes with .concentration ?

How the colour and magnetic property of solutions of alkali metals in

1.	How the colour and magnetic property of solutions of alkali metals in liquid NH_(2) changes with .concentration ?
Answer» Solution :SOLUTIONS of ALKALI metals in liquid `NH_(3)` are blue in colour and PARAMAGNETIC in NATURE due to ammoniated electron. In concentrated solution, the blue colour changes to bronze colour and becomes diamagnetic.