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Hydrogen
From GAWDAwiki
Hydrogen (H) is the simplest element in the universe, containing a single proton and electron.
Liquid hydrogen is important in cryogenics and in the study of superconductivity, as its melting point is only 20 degrees above absolute zero.[2]
Properties
- Atomic number: 1
- Atomic Weight: 1.00794
- Melting point: -434.81°F (-259.34°C or 13.81 K)
- Boiling point: -423.17°F (-252.87°C or 20.28 K)
- Density: 0.00008988 grams per cubic centimeter
- Phase at room temperature: Gas
- Element classification: Non-metal
- Period number: 1
- Group number: 1
- Group name: None[1]
References
Video
Click the following links to view videos about hydrogen.



