Question

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

विकल्प

• ammoniated electron

• sodium ion

• sodium amide

• ammoniated sodium ion

Answer 1

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

Explanation:

The alkali metals dissolve in liquid ammonia and give a blue solution, which is conductive in nature. A solution of sodium in liquid ammonia at − 30°C conducts electricity. The ammoniated electrons are responsible for the blue color of the solution as they absorb energy in the visible region of light and impart blue color to the solution.