H
Hydrogen (Atomic Number 1)
Category: reactive-nonmetal | Period 1, Group 1 | Block: s
Lightest and most abundant element in the universe.
Atomic & Physical Constants
- Standard Atomic Weight:
- 1.008 u
- Standard State Phase:
- Gas
- Electron Configuration:
- 1
- Electronegativity (Pauling):
- 2.2
- Melting Point:
- 13.99 K
- Boiling Point:
- 20.271 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
Rocket fuel, ammonia production, welding
Discovery History
Discovered by Henry Cavendish (1766).
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