Q. When Na reacts with liquid ${NH}_{3}$ the following substance is formed
A) $\left. \ \ Na\left( NH_{3} \right)_{x} \right\rbrack^{-}$
B) $\left\lbrack e\left( NH_{3} \right)_{y} \right\rbrack^{-}$
C) $NaNH_{2}$
D) $Na_{x}\left( NH_{3} \right)_{y}$
Explanation
(b)
+ -
$Na + (x + y)NH_{3} \rightarrow \left\lbrack Na\left( NH_{3} \right)x \right\rbrack + \left\lbrack e\left( NH_{3} \right)_{y} \right\rbrack$
Sodium dissolves in liquid ammonia to produce deep blue colour in solution.
The blue coloured solution possesses high conducting power, stromy reducing nature due to ammoniated electrons. The cation is also solvated by ammonia.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.