# Why are alkyl iodides MORE reactive than alkyl fluorides?

Apr 9, 2017

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.

Apr 9, 2017

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