So electron affinity is the enthalpy change associated with the rxn: M (g) + e− → M −(g) How should this evolve across a Period from left to right?As the name suggests, electron affinity is the ability of an atom to accept an electron. Unlike electronegativity, electron affinity is a quantitative measurement of the energy change that occurs when an electron is added to a neutral gas atom. The more negative the electron affinity value, the higher an atom's affinity for electrons.Electron affinity is the amount of energy released when an electron is added to a neutral atom in the gaseous state. In other words, when an electron is added to a neutral atom, energy will be released, but the amount will depend on several things. The atomic radius and effective nuclear charge being two main things. What does electron affinity measure.
28 Sep 2021, 14:17
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