Question

Which among the following is the most reactive?

Options

• Cl₂

• Br₂

• I₂

• ICl

Answer 1

ICl

Explanation:

Interhalogen compounds like ICl are more reactive than individual halogens because the bond between two different halogen atoms (X-Y) is weaker than the bond between identical halogen atoms (X-X or Y-Y). This makes them more reactive toward substitution and addition reactions. So, although Cl₂ is a reactive halogen, ICl, being an interhalogen compound, is even more reactive due to its weaker and more polar bond.