Question

Red precipitate is obtained when ethanol solution of dimethylglyoxime (dmg) is added to ammoniacal $Ni$(II). Which of the following statements is true?

• A. Red complex has a square planar geometry.
• B. dmg exists as bivalent anion in the complex.
• C. Coordination no. of $Ni$ is 6 in the red complex.
• D. Dimethylglyoxime has four donor sites

Answer 1

Answer: (A)

$\left[Ni\left(dmg\right)_{2}\right]$ is square planar in structure.