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Chemistry
Is this a good alternative definition of electron affinity?
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[QUOTE="etotheipi, post: 6300452"] I'm by no means an authority, however I wouldn't say the second definition is sufficient. The electron affinity, ##E_{ea}##, is a [I]numerical quantity[/I] - the energy released per mole on gaining an electron. As such, the definition must be precise. Granted, the atom-electron system becomes more energetically stable after the first electron affinity. But this is more of a consequence, and not the definition of ##E_{ea}##. As an aside, it might be worthwhile to make the distinction between ##E_{ea}## and the enthalpy change of electron capture ionisation. ##E_{ea}## is the energy released, whilst the enthalpy change is a change in the total energy. Assuming constant pressure and volume, ##\Delta H_{ea} = - E_{ea}##. [/QUOTE]
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Is this a good alternative definition of electron affinity?
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