Why is the electron gain enthalpy of O or F is less negative than that of the succeeding element in the group ?
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Why is the electron gain enthalpy of O or F is less negative than that of the succeeding element in the group ?
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Answer:
Generally, electron gain enthalpy becomes less negative (decreases) as we go down the group because the size of the atom increases and the added electron will be farther from the nucleus.
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Explanation:
So, the electron gain enthalpy of O or F is less than that of succeeding element in their respective groups due to their smaller atomic size and more electron - electron repulsions