Answer :
Final answer:
HBr is the compound that fits the criteria of forming a powerful acid containing a halogen.
Explanation:
HBr is the compound that forms a powerful acid and contains a halogen. Hydrogen bromide (HBr) is a hydrogen halide compound that dissociates in water to form a strong acid. Among the options provided, HBr fits the description of a compound that forms a powerful acid and contains a halogen.
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