Which of the following is true about the solution of sodium in ammonia ?
It is colourless .
It is diamagnetic .
Both a and b
It is paramagnetic.
As we learnt ,
Magnetism of alkali metal-ammonia solution -
Blue solution is paramagnetic while the bronze solution is diamagnetic
-
Due to presence of ammoniated electron in the solution , it is paramagnetic.
Therefore, option (4) is correct.