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How the colour and magnetic property of ...

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

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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.
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AAKASH SERIES-ALKALI METALS-Questions for descriptive answers
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