Question

Electron affinity on moving down the group in the periodic table:

• A. decreases
• B. increases
• C. constant
• D. none of these

Answer 1

The correct option is A decreases

Electron affinity reflects the ability of an atom to accept an electron. It is the energy change that occurs when an electron is added to a gaseous atom. Atoms with stronger effective nuclear charge have greater electron affinity. Electron affinity decreases moving down a group.