Question

Define electron affinity....??​

Answer 1

Answer:

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The electron affinity of an atom or molecule is defined as the amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion

Answer 2

✨ $\large\underline\purple{ Electron~ ~ affinity }$ :- The amount of energy released in adding an extra electrons to an isolated gaseous atom in its lowest energy state to convert it into a gaseous anion.

1. Electron affinity decreases in Groups.
2. Electron affinity increases in Periods.