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Question

When Na reacts with liquid NH3 the following substance is formed:

A
[Na(NH3)x]
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B
[e(NH3)y]
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C
NaNH2
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D
NaxNH3y
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Solution

The correct option is C [e(NH3)y]
Sodium (Na) dissolves in liquid ammonia (NH3) solution to form a blue colored solution characteristic of a solvated electron in liquid ammonia which is conducting in nature due to presence of solvated electrons.
Reaction is Na+(x+y)NH3[Na(NH3)x]++[e(NH3)y]
So B is correct answer.

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