4: Periodic Properties Last updated Oct 4, 2022 Save as PDF 3.2.7: Therapeutic Radiation 4.1: Coulombic Attraction (Electrons in Context) Page ID413304 ( \newcommand{\kernel}{\mathrm{null}\,}\) 4.1: Coulombic Attraction (Electrons in Context)4.1.1: The Periodic Table4.1.1.1: The periodic table4.1.2: The periodic trends in properties of the elements4.2: Electron Configurations/Valence Electrons4.2.1: Arrangements of Electrons4.2.1.1: Electrons in atoms