and are known when and are:

Question

and  are known when  and  are:

Canvas Classes · Accepted Answer

(Fe²⁺ halides): Fe²⁺ is a mild reducing agent and does not reduce halides. All four halides are known:
- , , ,  ✓

(Fe³⁺ halides): Fe³⁺ is an oxidising agent. It can oxidise  to , so  does NOT exist (Fe³⁺ would oxidise I⁻):

So , ,  exist but  does NOT.

Answer: Option (1) — x = F, Cl, Br, I and y = F, Cl, Br

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