Which one of the following arrangements does not give the, correct picture of the trends indicated against it?

detailed solution

Correct option is A

(1) Cl2​>Br2​>F2​>I2​: Bond dissociation energy.As we from top to bottom as atomic size increases Bond dissociation energy decreases but exception for F due to high electronegativity. Incorrect order.(2) F2​>Cl2​>Br2​>I2​: Oxidizing nature.As we from top to bottom as atomic size increases oxidizing nature decreases due to decrease in electronegativity. Correct order.(3) Cl2​>F2​>Br2​>I2​: Electron gain enthalpy. As we from top to bottom as atomic size increases and effective nuclear charge decreases and hence electron gain enthalpy decreases except for F due to high electronic repulsion. Incorrect order.4) F2​>Cl2​>Br2​>I2​: Electronegativity. As we from top to bottom as atomic size increases and electronegativity decreases. Correct order.