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ChemistryNEET 2021Nucleophilic substitution: SN1 and SN2

Haloalkanes and Haloarenes

The correct sequence of bond enthalpy of the C–X bond is:

  1. A.CH3−F<CH3−Cl<CH3−Br<CH3−I\mathrm{CH_3{-}F < CH_3{-}Cl < CH_3{-}Br < CH_3{-}I}
  2. B.CH3−F>CH3−Cl>CH3−Br>CH3−I\mathrm{CH_3{-}F > CH_3{-}Cl > CH_3{-}Br > CH_3{-}I}✓
  3. C.CH3−F<CH3−Cl>CH3−Br>CH3−I\mathrm{CH_3{-}F < CH_3{-}Cl > CH_3{-}Br > CH_3{-}I}
  4. D.CH3−Cl>CH3−F>CH3−Br>CH3−I\mathrm{CH_3{-}Cl > CH_3{-}F > CH_3{-}Br > CH_3{-}I}

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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