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Haloalkanes And Haloarenes

Question
CBSEENCH12010830
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Which of the following is the correct order of decreasing SN2 reactivity? 

  • RCH2X > R3CX > R2CHX

  • RCH2X > R2CHX > R3CX

  • R3CX > R2CHX >RCH2X

  • R2CHX > R3CX >RCH2X

Solution

B.

RCH2X > R2CHX > R3CX

More is the steric hindrance at the carbon bearing the halogen, lesser is the SN2 reactivity. 

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