B
Boron (Atomic Number 5)
Category: metalloid | Period 2, Group 13 | Block: p
Low-abundance metalloid key to heat-resistant glass and semiconductors.
Atomic & Physical Constants
- Standard Atomic Weight:
- 10.81 u
- Standard State Phase:
- Solid
- Electron Configuration:
- 2, 3
- Electronegativity (Pauling):
- 2.04
- Melting Point:
- 2349 K
- Boiling Point:
- 4200 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
Borosilicate glassware (Pyrex), fiberglass, semiconductor doping
Discovery History
Discovered by Joseph Louis Gay-Lussac (1808).
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