Question

ICl is more reactive than I₂.

Explain why:

ICI is more reactive than I₂.

Answer 1

The I-Cl bond in ICl is weaker than the I-I bond in I₂. Therefore, ICl is more reactive than I₂.

Answer 2

ICI is more reactive than I₂ because ICl is polar and has lower bond energy than I₂ (non-polar).

Answer 3

1. ICl has a polar bond due to the difference in electronegativity between iodine and chlorine, making it more reactive.
2. I₂ has a nonpolar I-I bond which is stronger and less reactive.
3. The I-Cl bond in ICl is weaker than the I-I bond in I₂, so it breaks more easily.
4. ICl acts as a better halogenating agent due to its polarity and weaker bond.

Thus, ICl is more reactive than I₂.