Ga
Gallium (Atomic Number 31)
Category: post-transition | Period 4, Group 13 | Block: p
Soft metal that melts in human hand (29.76 °C).
Atomic & Physical Constants
- Standard Atomic Weight:
- 69.7231 u
- Standard State Phase:
- Solid
- Electron Configuration:
- 2, 8, 18, 3
- Electronegativity (Pauling):
- 1.81
- Melting Point:
- 302.9146 K
- Boiling Point:
- 2673 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
GaAs semiconductors, LEDs, high-temp thermometers
Discovery History
Discovered by Lecoq de Boisbaudran (1875).
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