The value of electron gain enthalpy with negative sign for sulphur is higher than that for oxygen . give reasons.
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2
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The reason for that, the atomic size of oxygen is quite small. Because of this, the electron-electron repulsions in 2p sub-shell are quite high. Hence, the incoming electron is not accepted as easily in oxygen as it is in sulphur. Hence, the negative electron gain enthalpy for sulphur is higher than that of oxygen.
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Answer:
Due to smaller size of oxygen than sulphur electron-electron repulsion is more in oxygen than sulphur .
Explanation:
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