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Which of the following ionic species can...

Which of the following ionic species canno be present in the sodium fusion extract used in Lassaigne's test?

A

`SCN^(-)`

B

`CN^(-)`

C

`N_(3)^(-)`

D

`S^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
C
During sodium metal fusion, carbon and nirtogen combine with `Na` metal to form sodium cyanide `(NaCN)`. Sulphur reacts with sodium to give sodium sulphide `(Na_(2)S)`. If nitrogen and sulphur both are present in the organic compound, they may react with sodium to give sodium thiocyanate `(NaSCN)`.
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