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CGP EDU Academic Team
Published on: August 12, 2026
The second ionization enthalpies of elements are always higher than their first ionization enthalpies because:
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Verified by ExpertsThe correct answer is:
D
As elements are ionized, the proton to electron ratio increases, so the attraction between valence shell electron and nucleus increases and as a result the size decreases. Therefore, the removal of electron from smaller cation requires higher energy. Hence the second ionization enthalpy is greater than its first ionization enthalpy.
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