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JEE Advanced 2024 Paper 2 Online
Numerical
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When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is observed in which a complex $\mathbf{P}$ is formed. In a strong acidic medium, the equilibrium shifts completely towards $\mathbf{P}$. Addition of zinc chloride to $\mathbf{P}$ in a slightly acidic medium results in a sparingly soluble complex Q.
The number of zinc ions present in the molecular formula of $\mathbf{Q}$ is _______.
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