COMEDK2014Chemistrys Block Elements
Sodium dissolves in liquid NH ₃ to give a deep blue solution. This is due to
Options
- Aammoniated Na ⁺
- Bammoniated Na ⁻
- Cformation of Na ⁺ / Na ⁻ pair
- Dammoniated electrons
Correct answer
D. ammoniated electrons
Step-by-step solution
Na +(x+y) NH ₃ [ Na ( NH ₃ )_ x ]⁺+ [e ( NH ₃ )_ y ]⁻ . The deep blue colour of the solution is due to the ammoniated electron which absorbs energy in the visible region of light and thus, imparts blue colour to the solution.