7: Periodic Properties of the Elements Last updated Jun 23, 2019 Save as PDF GRC Chem 162: General Chemistry II (Lundquist) 7.1: History of the Periodic Table Page ID54984 ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy7.1: History of the Periodic Tablediscovery of the elements, Mendeleev's proposed classification scheme, Henry Moseley and atomic number7.2: Effective Nuclear Chargedetermining effective nuclear charge, trends within a period7.3: Sizes of Atoms and Ionsnon-bonding and bonding radii, periodic trends in radii, ionic radii, trends in ionic radii, isoelectronic series7.4: Ionization Energydefinition of, periodic trends, notable exceptions, successive ionization energies7.5: Electron Affinitydefinition of, trends by groups, why is N positive?7.6: Metals, Non-metals, and Metalloidsproperties of each, metallic character, type of oxides7.7: Group Trends for Group 1A and 2Atrends for group 1A and 2A7.8: Group Trends for Selected Nonmetalsgroup trends for selected non-metals