Question

A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of
A. Sodium atom
B. Sodium hydride
C. Sodium amide
D. Solvated electrons

Answer 1

Correct Answer - D
The alkali metals dissolve in liquid ammonia without the evolution of hydrogen.
`Na^(o+)+(x+y)NH_(2)rarr[Na(NH_(3))_(x)]^(o+)+underset("electrons")underset("Ammonia")([e(NH_(3))_(y)]^(Θ))`
It is an ammoniated electron which is responsible for the colour and reducing properties.