In basic medium the amount of `Ni^(2+)` in a solution can be estimated with the dimethylglyoxime reagent. The correct statement (s) abot the reaction and the product is ( are )

Options

A. In ammonical solution `Ni^(2+)` salts give cherry-red precipitate of nickel (II) dimethylglyoximate
B. Two dimethylglyoximate units are bound to one `Ni^(2+)`
C. In the complex two dimethylglyoximate units are hydrogen bonded to each other
D. Each dimethylglyoximate unit forms a six-membered chelate ring with `Ni^(2+)`

Answer

D

Explanation