JEE Main 2024 Chemistry question
Given below are two statements: Statement I: Dimethyl glyoxime forms a six membered covalent chelate when treated with NiCl solution in presence of NHOH. Statement II: Prussian blue precipitate contains iron both in (+2) and (+3) oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below:
Answer: (A)
Solution
The Ni–DMG complex has five-membered chelate rings; Prussian blue, Fe₄[Fe(CN)₆]₃, contains Fe(II) and Fe(III).