MCQ
Formulae for Nessler's reagent is:
  • A
    $KHg _2 I _2$
  • B
    $KHgI _3$
  • $K _2 Hg _4$
  • D
    $HgI _2$

Answer

Correct option: C.
$K _2 Hg _4$
c
Nessler's reagent is $K _2 HgI _4$.

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