Question

Give one word or a phrase for the following statement: The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged ion.

Answer 1

Electron affinity

1. It is the amount of energy required while adding an electron to a neutral gaseous isolated atom in order to form an anion.
2. Electron affinity increases across a period from left to right and decreases down the group.

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.