Given below are two statements :

Question:

Given below are two statements :

Statement I :

The identification of $\mathrm{Ni}^{2+}$ is carried out by dimethyl glyoxime in the presence of $\mathrm{NH}_{4} \mathrm{OH}$.

Statement II :

The dimethyl glyoxime is a bidentate neutral ligand.

In the light of the above statements, choose the correct answer from the options given below:

  1. Statement I is false but Statement II is true.

  2. Both Statement I and Statement II are false.

  3. Statement I is true but Statement II is false.

  4. Both Statement I and Statement II are true.


Correct Option: , 3

Solution:

Neutral dimethyl glyoxime does not act as ligand.

When $\mathrm{Ni}^{2+}$ reacts with dimethyl glyoxime in presence of $\mathrm{NH}_{4} \mathrm{OH}$, it produce dimethyl glyoximate then it form rozy red ppt.

$\left.\mathrm{Ni}^{2+}{ }_{\text {(aq) }}+2 \mathrm{dmg}^{-} \rightarrow \underset{\text { Rosyred ppt. }}{\left[\mathrm{Ni}(\mathrm{dmg})_{2}\right.}\right]$

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