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Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.
Reason: The deep blue solution is due to the formation of amide.
A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true but R is NOT the correct explanation of A
C
A is true but R is false
D
A is false but R is true
Explanation
The deep blue colour and paramagnetism are due to ammoniated electrons, not amide.
Detailed Solution
The paramagnetism of solution of alkali metals in liquid ammonia and its deep blue colour is due to ammoniated electrons, which absorb energy in visible region of light.