\(\mathrm{FeX_2}\) and \(\mathrm{FeY_3}\) are known when x and y are :
Show Hint
- x = F, Cl, Br, I and y = F, Cl, Br, I
- x = F, Cl, Br and y = F, Cl, Br, I
- x = F, Cl, Br, I and y = F, Cl, Br
- x = Cl, Br, I and y = F, Cl, Br, I
The Correct Option is C
Solution and Explanation
In \(\mathrm{FeY_3}\) iron is +3. \(\mathrm{Fe^{3+}}\) is a good oxidant and \(\mathrm{I^-}\) a good reductant: \(2\mathrm{Fe^{3+}} + 2\mathrm{I^-} \to 2\mathrm{Fe^{2+}} + \mathrm{I_2}\). Hence FeI3 is not stable.
So y = F, Cl, Br only.
Answer: (3) x = F, Cl, Br, I and y = F, Cl, Br
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