See also:

• Health: Nutrition: Nutrients: Vitamins and Minerals: Potassium  (6)
• Science: Chemistry: Elements: Alkali Metals  (2)

• ChemGlobe: Potassium - Electronic, thermal, and steric data along with basic information.
• ChemicalElements.com: Potassium - Basic information, atomic structure, and isotopes.
• EnvironmentalChemistry.com: Potassium - Atomic structure, chemical and physical properties, and table of nuclides.
• It's Elemental: Potassium - Basic physical and historical information.
• LANL: Potassium - Sources, uses, properties, and isotopes.
• Lenntech: Potassium - Physical data, chemical properties, and health effects.
• Visual Elements: Potassium - Image, animation, source, uses, physical information, and key isotopes.
• WebElements: Potassium - Extensive information on history, uses, occurrence, compounds, and properties of the element.
• Wikipedia: Potassium - Properties of the element, including its history, applications, and characteristics.

• Radiochemistry of Potassium - Full text of the monograph by William T. Mullins and G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] (November, 1961)