2-chloro-2-bromo-1,1,1-trifluoroethane
2-bromo-2-chloro-1,1,1-trifluoroethane
1-bromo-1-chloro-2,2,2-trifluoroethane
1,1,1-trifluoro-2-bromo-2-chloroethane
Correct answer is B
No explanation has been provided for this answer.
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