Question

Find the value of second electron affinity of oxygen
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Answer 1

Answer:

(A) : The second electron affinity of oxygen is endothermic. ... When we add second electron we need to supply energy to oxygen anion ... Get Instant Solutions, 24x7 ... Electron Gain Enthalpy, its Variation and Importance.The second electron affinity of Oxygen is positive because after adding 2 electrons to a neutral Oxygen atom (with 4 electrons in the p-subshell), it attains a noble gas configuration. A noble gas configuration, being the most stable, releases energy (heat) to decrease the total energy of the configuration.

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