Boron (B)
- Atomic Number: 5
- Atomic Weight: 10.81
- Melting Point: 2300
- Boiling Point: 2550
- Specific Gravity: 2.34 (crystals) 2.37 (amorphous)
- Valence(s): 3
Boron was discovered in 1808 by Davy, Gay-Lussac, and Thenard.
Rasorite is the main mineral source of Boron.
Impure Boron is a dark brown powder that turns bright green when ignited.
This makes it useful in pyrotechnics.
Appliances such as dryers and refrigerators are coated with Boron compounds.
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