The symbol for potassium on the periodic table is K.
Potassium is a chemical element with the atomic number 19. The symbol ‘K’ comes from the Latin word ‘kalium,’ which means potash. This is fitting, as potassium was first isolated from potash, which is the ashes of plants that contain potassium carbonate. In the periodic table, each element is represented by a one- or two-letter symbol, and potassium’s ‘K’ is unique and easily identifiable among the other elements.