2022 The p-Block Elements (Group 15 to 18)Group 17 Elements – Interhalogen Compounds Medium Question 2 of 11 in The p-Block Elements (Group 15 to 18)

Assertion (A): ICl is more reactive than $I_2$.

Reason (R): I-Cl bond is weaker than I-I bond
A Both A and R are true and R is the correct explanation of A
B Both A and R are true but R is NOT the correct explanation of A
C A is true but R is false
D A is false but R is true

The answer is A.

Solution

ICl is more reactive than $I_2$ because the I–Cl bond is polar and weaker than the I–I bond. In general, the X–X' bond in interhalogens is weaker than the X–X bond (except F–F). So both A and R are correct and R is the correct explanation of A.

Concept reactivity of interhalogens

The p-Block Elements (Group 15 to 18) in past papers

11 questions from this chapter have appeared across 5 exam years.