Chemistry

USGS Minerals Information: Indium USGS Minerals Information: Indium- Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). ChemicalElements.com: Indium ChemicalElements.com: Indium- Basic information, atomic structure, and isotopes. It's Elemental: Indium It's Elemental: Indium- Basic physical and historical information. Lenntech: Hydrogen Lenntech: Hydrogen- Physical data, chemical properties, health and environmental effects. EnvironmentalChemistry.com: Hydrogen EnvironmentalChemistry.com: Hydrogen- Atomic structure, chemical and physical properties, and table of nuclides. Especiál Gas Inc.: Hydrogen Especiál Gas Inc.: Hydrogen- Numeric data, uses, and general information. Hydrogen Energies and Spectrum Hydrogen Energies and Spectrum- The Bohr model for an electron transition in hydrogen between quantized energy levels with different quantum numbers n yields a photon by emission … It's Elemental: Hydrogen It's Elemental: Hydrogen- Basic physical and historical information. Chemical of the Week: Hydrogen Chemical of the Week: Hydrogen- Equations for reactions between hydrogen and other substances. ChemicalElements.com: Hydrogen ChemicalElements.com: Hydrogen- Basic information, atomic structure, and table of isotopes. Wikipedia: Hydrogen Wikipedia: Hydrogen- Properties of the element, including its history, applications, and characteristics. WebElements: Holmium WebElements: Holmium- Extensive information on history, uses, occurrence, compounds, and properties. Wikipedia: Holmium Wikipedia: Holmium- Properties of the element, including its history, applications, and characteristics. Lenntech: Holmium Lenntech: Holmium- Physical data, chemical properties, health and environmental effects. EnvironmentalChemistry.com: Holmium EnvironmentalChemistry.com: Holmium- Atomic structure, chemical and physical properties, and table of nuclides. It's Elemental: Holmium It's Elemental: Holmium- Basic physical and historical information. ChemicalElements.com: Holmium ChemicalElements.com: Holmium- Basic information, atomic structure, and isotopes table. Wikipedia: Helium Wikipedia: Helium- Properties of the element, including its history, applications, and characteristics. Lenntech: Helium Lenntech: Helium- Physical data, chemical properties, and health effects. EnvironmentalChemistry.com: Helium EnvironmentalChemistry.com: Helium- Atomic structure, chemical and physical properties, and table of nuclides. Corrosionsource.com: Helium Corrosionsource.com: Helium- History, sources, properties, isotopes, and uses. USGS Minerals Information: Helium USGS Minerals Information: Helium- Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). Especiál Gas Inc.: Helium Especiál Gas Inc.: Helium- Numeric data, uses, and general information. ChemicalElements.com: Helium ChemicalElements.com: Helium- Basic information, atomic structure, and table of isotopes. It's Elemental: Helium It's Elemental: Helium- Basic physical and historical information. WebElements: Helium WebElements: Helium- Extensive information on history, uses, occurrence, and properties of the element. Wikipedia: Hassium Wikipedia: Hassium- Basic physical and historical information. Lenntech: Hassium Lenntech: Hassium- Basic data. EnvironmentalChemistry.com: Hassium EnvironmentalChemistry.com: Hassium- Atomic structure and table of nuclides. It's Elemental: Hassium It's Elemental: Hassium- Basic physical and historical information. ChemicalElements.com: Hassium ChemicalElements.com: Hassium- Basic information, diagram of atomic structure, and facts. Doc Brown's Chemistry Clinic: The Halogens Doc Brown's Chemistry Clinic: The Halogens- Includes an overview, general properties, reactivity trends, and information about the industrial electrolysis of sodium chloride solut… The Chemistry of the Halogens The Chemistry of the Halogens- Covers their properties, methods of preparation, general trends, the hydrogen halides, and oxyacids of the halogens and their salts. Wikipedia: Hafnium Wikipedia: Hafnium- Properties of the element, including its history, applications, and characteristics. Lenntech: Hafnium Lenntech: Hafnium- Physical data, chemical properties, health and environmental effects. EnvironmentalChemistry.com: Hafnium EnvironmentalChemistry.com: Hafnium- Atomic structure, chemical and physical properties, and table of nuclides. ChemicalElements.com: Hafnium ChemicalElements.com: Hafnium- Basic information, atomic structure, and isotopes. It's Elemental: Hafnium It's Elemental: Hafnium- Basic physical and historical information. Radiochemistry of Gold Radiochemistry of Gold- Full text of the monograph by J. F. Emery (Oak Ridge National Laboratory, Oak Ridge, Tennessee). Wikipedia: Gold Wikipedia: Gold- Properties of the element, including its history, applications, and characteristics. Lenntech: Gold Lenntech: Gold- Physical data, chemical properties, health and environmental effects. EnvironmentalChemistry.com: Gold EnvironmentalChemistry.com: Gold- Atomic structure, chemical and physical properties, and table of nuclides. USGS Minerals Information: Gold USGS Minerals Information: Gold- Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). ChemicalElements.com: Gold ChemicalElements.com: Gold- Basic information, atomic structure, and table of isotopes. It's Elemental: Gold It's Elemental: Gold- Basic physical and historical information. Radiochemistry of Germanium Radiochemistry of Germanium- Full text of the monograph by Jacob A. Marinsky (University of Buffalo, Dept. of Chemistry, Buffalo, New York). Wikipedia: Germanium Wikipedia: Germanium- Properties of the element, including its history, applications, and characteristics. Lenntech: Germanium Lenntech: Germanium- Physical data, chemical properties, health and environmental effects. EnvironmentalChemistry.com: Germanium EnvironmentalChemistry.com: Germanium- Atomic structure, chemical and physical properties, and table of nuclides. USGS Minerals Information: Germanium USGS Minerals Information: Germanium- Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).