Question

What is electron affinity? Write five affecting factors.​

Answer 1

Answer:

Smaller the size of an atom, greater is its electron affinity. As the size of atom increases, the effective nuclear charge decreases or the nuclear attraction for adding electron decreases. Consequently, atom will have less tendency to attract additional electron towards itself

Answer 2

Electron affinity is the energy change that results from adding an electron to a gaseous atom. For example, when a fluorine atom in the gaseous state gains an electron to form F⁻(g), the associated energy change is -328 kJ/mol.

5 affecting factors are:

(1) Atomic size

(2) Shielding or Screening Effect

(3) Electronic Configuration

(4) Internal electronic repulsion

(5) screening effect

Hope it helps you