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How can F2 be more reactive as compared to I2? Doesn't I2 have weaker I-I bond?

How can F2 be more reactive as compared to I2? Doesn't I2 have weaker I-I bond?

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2 Answers

Raj
15 Points
5 years ago
F has very small size ie smaller orbitals due to which repulsive interaction between electrons increase
Rajdeep
231 Points
5 years ago
HELLO THERE!
 
The reactivity of non metals (halogens) like Fluorine, chlorine, bromine and iodine, are based on how easily they can combine with a metal (or sometimes non-metal) by accepting electrons.
 
Now, size of Fluorine is much much less than that of Iodine. Hence, the outermost electrons are held tightly by the nucleus in Fluorine, and any electron lost by a metal can be easily accepted by Fluorine. However, Iodine’s outermost electrons are far away from the nucleus, so they experience no nuclear pull, and its tough for iodine to accept electrons donated by metals.
 
So, we can conclude that Lesser is the size of a non metal, the more reactive it is, and vice versa.
 
So, Fluorine is more reactive than Iodine..
THANKS!

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