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Explain the reason for the fusion of an ...

Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens.

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On fusing with sodium, these elements present in the compound are converted into their sodium salts `(NaCN, NaX" and "Na_(2)S)` which are water soluble. From the solution, theses elements can be detected by suitable tests. For more details, consult section 12.43.
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