Question

Which of the following is the correct order of decreasing SN2 reactivity? (X is a halogen)

RCH2X > R2CHX > R3CX
R3CX > R2CHX > RCH2X
R2CHX > R3CX > RCH2X
RCHX > R3CX > R2CHX

Answer 1

Answer:

♠ The correct option is A.

Explanation:

➾  In SN2 reaction, in the transition state there will be five groups attached to the carbon atom at which reaction occurs. Thus, there will be crowding in the transition state, and the bulkier the group, the more the reaction will be hindered sterically.

➾  Hence, SN2 reaction is favoured by small groups on the carbon atom attached to halogens. So the decreasing order of reactivity of halide is

➤ (primary) > (secondary) > (tertiary)

⇒ RCH2X > R2CHX > R3CX

Answer 2

Answer

Hey mate in this the option a is correct .

Plz mark this as brainlest answer