EVERYDAY SCIENCE

Detailed explanation-1: -The electron affinity (Eea) of an atom or molecule is defined as the amount of energy released when an electron attaches to a neutral atom or molecule in the gaseous state to form an anion.

Detailed explanation-2: -When an atom gains an electron, energy is usually released. This energy is called the electron affinity of that atomic species. Atoms that have a large electron affinity are more likely to gain an electron and form negative ions.

Detailed explanation-3: -Hence, the energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged ion is called Electron affinity.

Detailed explanation-4: -The amount of energy released when a neutral atom in its gaseous state accepts an electron and gets converted into a negatively charged ion is known as electron affinity. X ( g ) + e − → X − ( g ) + E . A . Therefore, the electron affinity of chlorine is – 349 KJ/mol.

Detailed explanation-5: -The energy released when a neutral gaseous atom takes up an electron and forms a uninegative ion is called its electron affinity.