Metallic Character Tracks Ionization Energy
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Metallic character is the tendency to lose valence electrons readily; it rises as ionization energy falls, down a group and leftward across a period.
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Cesium, far down and left, loses its valence electron more easily than any other stable element.
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Metallic character is a matter of degree, not a fixed label; metalloids sit where the trend crosses from metallic to nonmetallic behavior.
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- 2287 Alkali Metal Reactivity Increases Down the Group
- 2290 Passivation Defined
- 2296 Group Oxidation State from Valence Electron Count
- 2305 Metalloids as Intermediate Semiconductors
- 2314 Nonmetals Form Only Anions, Never Monatomic Cations
- 2317 Fluorine and Oxygen as the Strongest Oxidizers
- 2360 Capstone: Predicting Bonding and Reactivity from Periodic Position