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Science: Chemistry: Elements: Nonmetals
Science: Technology: Energy: Hydrogen
Chemical of the Week: Hydrogen
- Equations for reactions between hydrogen and other substances.
- Basic information, atomic structure, and table of isotopes.
- Atomic structure, chemical and physical properties, and table of nuclides.
Especiál Gas Inc.: Hydrogen
- Numeric data, uses, and general information.
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 with quantum energy.
It's Elemental: Hydrogen
- Basic physical and historical information.
- Physical data, chemical properties, health and environmental effects.
- Properties of the element, including its history, applications, and characteristics.
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