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Electron affinities and their enthalpy values

 
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Feb19-12, 07:28 AM   #1
 

Electron affinities and their enthalpy values


Are all electron affinities beyond the first electron affinity positive?

For example the first electron affinity of Oxygen is -142
and the second electron affinity is +844.

Is it so? or does it fluctuate?
 
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