Na
Sodium (Atomic Number 11)
Category: alkali | Period 3, Group 1 | Block: s
Highly reactive, soft alkali metal stored under oil.
Atomic & Physical Constants
- Standard Atomic Weight:
- 22.989769282 u
- Standard State Phase:
- Solid
- Electron Configuration:
- 2, 8, 1
- Electronegativity (Pauling):
- 0.93
- Melting Point:
- 370.944 K
- Boiling Point:
- 1156.09 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
Table salt (NaCl), soap production, sodium street lighting
Discovery History
Discovered by Humphry Davy (1807).
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