Nessler's reagent, an alkaline solution of , is used to detect the radical (Zero Group). A positive test yields a brown precipitate chemically known as:

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Question

Nessler's reagent, an alkaline solution of $K_2HgI_4$, is used to detect the $NH_4^+$ radical (Zero Group). A positive test yields a brown precipitate chemically known as:

Prashant Kotian · Accepted Answer

Correct answer: A. The brown precipitate formed by ammonia with Nessler's reagent is called the Iodide of Millon's base, with the chemical formula .

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