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(1R,2S)‐1,2‐dibromocyclopentane and (1R,3S)‐1,3‐dibromocyclopentane

Are these positional isomers or not? According to me they are, since Br substituent is located at different positions in both the pictures, but the answer key in one of my mock test websites says they're not. Can someone please guide me?

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    $\begingroup$ Does the the website you are using specify why these are not isomers? $\endgroup$ Apr 26, 2021 at 5:27
  • $\begingroup$ No, unfortunately not $\endgroup$
    – Aashita
    Apr 26, 2021 at 5:50
  • 1
    $\begingroup$ They are definitely position isomers.. .No doubt in that .The answer in the website must be wrong. $\endgroup$
    – user108970
    Apr 26, 2021 at 5:51

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