Question

Why are alkyl iodides MORE reactive than alkyl fluorides?

Answer 1

Well, for a start consider the strength of the `C-I` bonds versus the `C-F` bond.........

Explanation:

You will have to look in text for this, in that I cannot find a useful table on the interwebz. However, it is a fact that the `C-F` bond is MUCH stronger than the `C-I` bond, and that, therefore, `C-I` should undergo substitution more readily via dissociative OR associative mechanisms.

Answer 2

R-I bond is more reactive than R-F

Explanation:

• F and I are from same group.
• F comes first and then I.
  F
  Cl
  Br
  I
  At
  Due to strong nuclear charge in case of F , F has high electron affinity than I.Thus,R-I is more reactive than R-F.
  = to free electron easily