Phosphorus

WebElements: Potassium WebElements: Potassium- Extensive information on history, uses, occurrence, compounds, and properties of the element. Radiochemistry of Potassium Radiochemistry of Potassium- Full text of the monograph by William T. Mullins and G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). Wikipedia: Potassium Wikipedia: Potassium- Properties of the element, including its history, applications, and characteristics. Lenntech: Potassium Lenntech: Potassium- Physical data, chemical properties, and health effects. EnvironmentalChemistry.com: Potassium EnvironmentalChemistry.com: Potassium- Atomic structure, chemical and physical properties, and table of nuclides. ChemicalElements.com: Potassium ChemicalElements.com: Potassium- Basic information, atomic structure, and isotopes. It's Elemental: Potassium It's Elemental: Potassium- Basic physical and historical information.