Science, Tech, Math › Science Periodic Table of the Elements - Oxidation Numbers Share Flipboard Email Print Science Chemistry Periodic Table Basics Chemical Laws Molecules Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated November 05, 2019 Periodic Table of the Elements - Oxidation Numbers This periodic table contains the atomic number, element symbol, element name, atomic weights and oxidation numbers. Todd Helmenstine This periodic table contains the oxidation numbers of the elements. Bold numbers represent the more common oxidation states. Values in italics represent theoretical or unconfirmed oxidation numbers. This table also contains the element number, element symbol, element name and atomic weights of each element. This periodic table in PDF format can be downloaded from here. The above image in a 1920x1080 PNG format can be downloaded as a wallpaper for PCs, Macintosh or mobile devices here. A color version of this periodic table and additional downloadable periodic tables for wallpapers or printing can be found here. About Oxidation Numbers The oxidation number refers to the electrical charge of an atom. Typically, this relates to the number of electrons that must be gained (negative oxidation number) or lost (positive oxidation number) for the atom's valence electron shell to be filled or half-filled. However, most metals are capable of multiple oxidation states. For example, iron common has an oxidation number of +2 or +3. Halogens, on the other hand, have an oxidation state of -1.