Prussian blue is a deep blue pigment containing Fe 2 + , Fe 3 + and CN - ions. It has the formula Fe 7 CN 18…

1. $3{\mathrm{Fe}}^{2+}$ and $4{\mathrm{Fe}}^{3+}$
2. $4{\mathrm{Fe}}^{2+}$ and $3{\mathrm{Fe}}^{3+}$
3. $5{\mathrm{Fe}}^{2+}$ and $2{\mathrm{Fe}}^{3+}$
4. $6{\mathrm{Fe}}^{2+}$ and $1{\mathrm{Fe}}^{3+}$

Solution

Asked in: JEE-TOPICTESTS-CHEMISTRY

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