Hydrogen Elements Chemistry

Hydrogen

• Top/Science/Technology/Energy/Hydrogen
• Top/Science/Chemistry/Elements/Nonmetals

• - Electronic, thermal, and steric data along with basic information.
  
• - Numeric data, uses, and general information.
  
• - 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.
  
• - Data tables and historic information.
  
• - "Contrary to popular belief and portrayal of hydrogen in the Periodic Table of Elementary Particles, single, stand-alone atoms of hydrogen are unstable and do not exist" [PDF]
  
• - General and physical information, uses, and key isotopes.
  
• - Atomic structure, chemical and physical properties, and table of nuclides.
  
• - Properties of the element, including its history, applications, and characteristics.
  
• - Basic physical and historical information.
  
• - Brief reference on the element includes discussion of the sources of hydrogen, its current uses, and potential for new energy applications.
  
• - Physical data, chemical properties, health and environmental effects.
  
• - Basic information, atomic structure, and table of isotopes.
  
• - Equations for reactions between hydrogen and other substances.
  
  

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