| It\'s_Elemental__Rutherfordium Basic physical and historical information. |
| LANL__Rutherfordium Basic information, history, and isotopes. |
| Lenntech__Rutherfordium Physical data and chemical properties. |
| Rutherfordium Historic information. |
| Visual_Elements__Rutherfordium Physical information, key isotopes, and ionisation energies. |
| WebElements__Rutherfordium Information on history and properties. |
| Cesium Data tables and historic information. |
| ChemicalElements_com__Cesium Basic information, atomic structure, and isotopes table. |
| EnvironmentalChemistry_com__Cesium Atomic structure, chemical and physical properties, and table of nuclides. |
| It\'s_Elemental__Cesium Basic physical and historical information. |
| LANL__Cesium History, sources, properties, and costs. |
| Lenntech__Cesium Physical data, chemical properties, health and environmental effects. |
| USGS_Minerals_Information__Cesium Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). |
| Visual_Elements__Caesium Image, general and physical information, and key isotopes. |
| WebElements__Caesium Extensive information on history, uses, occurrence, compounds, and properties. |
| Wikipedia__Caesium Properties of the element, including its history, applications, and characteristics. |
| Radiochemistry_of_Cesium Full text of the monograph by M. T. Kinsley (Brookhaven National Laboratory, Upton, New York). [PDF] (February, 1961) |
| ChemicalElements_com__Cobalt Basic information, atomic structure, and isotopes. |
| Cobalt Data tables and historic information. |
| EnvironmentalChemistry_com__Cobalt Atomic structure, chemical and physical properties, and table of nuclides. |
| It\'s_Elemental__Cobalt Basic physical and historical information. |
| LANL__Cobalt History, sources, properties, and uses. |
| Lenntech__Cobalt Physical data, chemical properties, health and environmental effects. |
| USGS_Minerals_Information__Cobalt Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). |
| Visual_Elements__Cobalt Image, general and physical information, source, uses, biological role, key isotopes, and ionisation energies. |
| WebElements__Cobalt Extensive information on history, uses, occurrence, compounds, and properties of the element. |
| Wikipedia__Cobalt Properties of the element, including its history, applications, and characteristics. |
| Radiochemistry_of_Cobalt Full text of the monograph by L.C. Bate (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] (September, 1961) |
| 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. |
| Potassium Data tables and historic information. |
| 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) |
| ChemicalElements_com__Scandium Basic information, atomic structure, and isotopes. |
| Discovery_of_Scandium Article by Lars Fredrick Nilson. |
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