Sodium dissolved in ammonia has blue colour due to:

solvated sodium molecule

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amide ion

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solvated electron

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lone pair of electrons on nitrogen in ammonia

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Solution

The correct option is B solvated electron
Ammonia solution turns blue when alkali and alkaline earth metals are dissolved in it. The blue color of the solution is considered to be due to ammoniated electrons which absorb energy corresponding to red region of the visible light for the their excitation to higher energy levels. The transmitted light is blue which imparts blue color to the solutions.

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Similar questions

Q. Assertion :Alkali metals dissolves in liquid ammonia and produce solvated cations and solvated electrons. Reason: The concentrated solutions of alkali metals in liquid ammonia is bronze coloured.

When sodium is dissolved in lequid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to
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