What is electron affinity? [1 mark Q&A]

What is Electron Affinity? or Define Electron Affinity. [1 Mark Q&A] – qChem+ The Home of Chemistry educational chemistry featured image showing an atom gaining an electron, electron affinity concept, and periodic table elements for HSC, SSC, O Level, AS Level, and A Level students.

Define Electron Affinity

The amount of energy released when 1 mol of electrons is added to 1 mol of atoms in the gaseous state to form 1 mol of negative ions is called electron affinity of the concerned element.

Symbol: Ea

Unit: kJ/mol

Expression:

M(g)+eM(g)M(g)+e^- → M^-(g)

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