Which is not the correct order for the stated property.Ba>Sr>Mg; atomic radiusF>O>N; first ionization enthalpyCl>F>I; electron affinityO>Se> Te ; electronegativity
Question
Which is not the correct order for the stated property.Ba>Sr>Mg; atomic radiusF>O>N; first ionization enthalpyCl>F>I; electron affinityO>Se> Te ; electronegativity
Solution
The incorrect order is F>O>N for first ionization enthalpy.
Ionization enthalpy generally increases across a period from left to right in the periodic table. This is because as we move from left to right, the atomic size decreases and nuclear charge increases. As a result, the outermost electrons are more tightly held by the nucleus and more energy is required to remove them.
In the case of F, O, and N, we would expect the ionization enthalpy to increase in the order of N<O<F, not F>O>N. Therefore, F>O>N is not the correct order for first ionization enthalpy.
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