Science, Tech, Math › Science Where Is Potassium Found On The Periodic Table? 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 Where Is Potassium Found On The Periodic Table? Potassium's location in the periodic table of the elements. Todd Helmenstine Potassium is the 19th element on the periodic table. It is located in period 4 and group 1. In other words, it is the element in the first column of the table that begins the fourth row. Potassium Facts Powdered potassium metal. Helmut Feil / Getty Images Potassium is an alkali metal, like sodium, cesium, and the other elements in group 1. It is the 7th most abundant element in the Earth's crust. It has atomic number 19, element symbol K, and an atomic weight of 39.0983.