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Periodic Properties of the Elements |
| 7.1 | Development of the Periodic Table | |
| 7.2 | Electron Shells and the Size
of Atoms Electron Shells in Atoms Atomic Sizes |
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| 7.3 | Ionization Energy Periodic Trends in Ionization Energies |
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| 7.4 | Electron Affinities | |
| 7.5 | Metals, Nonmetals, and Metalloids
Metals Nonmetals Metalloids |
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| 7.6 | Group Trends for the Active
Metals Group 1A: The Alkali Metals Group 2A: The Alkaline Earth Metals |
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| 7.7 | Group Trends for Selected
Nonmetals Hydrogen Group 6A: The Oxygen Family Group 7A: The Halogens Group 8A: The Noble Gases |
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