Question

Which of the following has the highest
electron affinity ?
F, Cl, Br, I

Answer 1

Answer:

Cl

Explanation:

Answer 2

Cl has the highest electron affinity.

• The electron affinity of a species is defined as the energy change when the atom accepts an electron.
• Generally on moving down along a group electron affinity decreases. But in the case of halogens Cl has a higher electron affinity than F due to the latter size. Due to its larger size, Cl can easily accumulates electron and show higher electron affinity.
• Hence the correct option is Cl.