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Chemistry · L3 · Ionization Energy, Electronegativity, and Metallic Character

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Three more periodic trends traced back to the same two causes: how hard the nucleus pulls, and how well inner shells shield the outer electrons.

by @openstemUpdated Chemistry
Across a period, left to rightMore protons pull harder on the outer shellIonization energy increasesElectronegativity increases, peaking near fluorineMetallic character decreasesDown a group, top to bottomNew shell plus more shielding loosens the nucleus's gripIonization energy decreasesElectronegativity decreasesMetallic character increases

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