why Oxygen has lower E.A than Sulphur
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The answer is electron-electron repulsion due to smaller atomic size. Oxygen being smaller in sizethan sulfur, has its valence shell electrons placed more closelythan sulfur. Due to this electrons repel each other greatly. ... S0 the overall electron affinity of theoxygen comes out to be lesserthan that of sulfur.
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Oxygen being smaller in size than sulfur, has its valence shell electrons placed more closely than sulfur. ... As an external electron is introduced, energy is released (which is called electron affinity) but at the same time, some of the energy is consumed due to the instability caused by electron-electron repulsion.
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