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Question

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.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Alkali metal dissolves in liquid ammonia and produces solvated cations and anions.
M+(x+y)NH3[M(NH3)x]++[e(NH3)y]
Above 3M concentration, the solutions are no longer blue but are bronze/ copper-bronze coloured with a metallic luster due to the formation of metal ion clusters.

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