nitro compound:-
Nitro compound, any of a family of chemical compounds in which the nitro group (−O−N=O) forms part of the molecular structure. The most common examples are organic substances in which a carbon atom is linked by a covalent bond to the nitrogen atom of the nitro group.
nitrite compound:-

Nitrites usually are prepared by absorption of nitric oxide and nitrogen dioxide in an alkaline solution.Salts of nitrous acid are ionic compounds containing the nitrite ion, NO-2, and a positive ion such as Na+ in sodium nitrite (NaNO2).
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