MCQ
$Ni^{2+}$ ion can be estimated by using dimethyl glyoxime and forms a cherry-red  precipitate. The complex is stabilized by
  • A
    ionic bonds
  • B
    coordinate covalent bonds
  • C
    dative $\pi$-bonds
  • hydrogen bonds

Answer

Correct option: D.
hydrogen bonds
d
$N i^{2+}$ reacts with dimethyl glyoxime to form a complex which has a cherry-red precipitate.It is stabilized by hydrogen bonding.
Two dmg ligands are linked to each other through hydrogen bonds.
$N i^{2+}+2 D M G \frac{+2 O H^{-}}{-2 H_{2} O} \underbrace{\left[N i(D M G)_{2}\right]}_{\text {Cherryredprecipitate }}$

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