Give possible explanation for the following : (ii) There are two - NH_ – InterviewSolution

1.	Give possible explanation for the following : (ii) There are two - NH_2 groups is semicarbazide . However, only one is involved in formation of semi carbonzone.
Answer» Solution :Only one - `NH_2` group attached to `C=O` is INVOLVED in reasonance . As result electron DENSITY on these `NH_2` group decreases and hence does not act as NUCLEOPHILE. .

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