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Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
A. why the ionization energy of nitrogen is greater than that of oxygen?
Accepted Answer
Nitrogen has a greater ionization energy than oxygen because it has a smaller atomic radius. The smaller the atomic radius, the stronger the attraction between the nucleus and the electrons, and the more energy it takes to remove an electron. In general, across a period in the periodic table, as you move from left to right, the atomic radius decreases, and the ionization energy increases.
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