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Chemistry 20 Online
OpenStudy (anonymous):

Consider Group 5A elements: nitrogen, phosphorus, and arsenic. These elements show an increase in their atomic numbers. Which element has the highest ionization energy?

OpenStudy (aaronq):

These are all on the same column (up down), Ionization energy increases as you go UP a column because the radius (at which valence electrons are held) decreases and there is a greater attraction [of electrons] towards the nucleus of an atom.

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