The alkali metals dissolve in ammonia to give a deep blue s…

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Alkali Metals Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The alkali metals dissolve in ammonia to give a deep blue solution which is conducting in nature.

Which of the following is not true about the solutions of alkali metals in liquid ammonia?

The blue colour is due to ammoniated electron.

The solution is paramagnetic.

The blue colour changes to brown on standing.

In concentrated solution blue colour changes to bronze and becomes diamagnetic.

Text Solution

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The correct answer is:

On standing it slowly liberates hydrogen resulting in formation of amide.

Where ‘am’ denotes solution in ammonia.

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