Question

Which of the following is incorrect with respect to property indicated?

• A. \( \text{E.N.} F > \text{Cl} > \text{Br} \)
• B. \( \text{E.A.} : \text{O} > \text{F} > \text{Br} \)
• C. Oxidizing power: \( F_2 > \text{Cl}_2 > \text{Br}_2 \)
• D. Bond energy: \( F_2 > \text{Cl}_2 > \text{Br}_2 \)

Hint:

Bond energies generally decrease with increasing size of the halogen atoms, making \( F_2 \) weaker than \( \text{Cl}_2 \) and \( \text{Br}_2 \).

Answer 1

The Correct Option is D

Step 1: Understand bond energy.
The bond energy of \( F_2 \) is lower than that of \( \text{Cl}_2 \) and \( \text{Br}_2 \) due to the small size of the fluorine atoms, which causes electron-electron repulsion.
Step 2: Conclusion.
The incorrect property is bond energy, as \( F_2 \) has a lower bond energy compared to \( \text{Cl}_2 \) and \( \text{Br}_2 \). Final Answer: \[ \boxed{\text{Bond energy: } F_2 > \text{Cl}_2 > \text{Br}_2} \]