-
qīng
氢
- 1
H
- Nonmetals
Hydrogen
-
Protons
1
- Electrons
1
- Neutrons
0
希腊文“形成水的元素”
General Properties
- Atomic Number
- 1
- Atomic Weight
- 1.00794
- Mass Number
- 1
- Category
- Nonmetals
- Color
- Colorless
- Radioactive
- No
- Discovery year
- 1766
- Crystal Structure
- Simple Hexagonal
- Electrons per shell
- 1
- Electron Configuration
- 1s1
Physical Properties
- Phase
- Gas
- Density
- 0.00008988g/cm3
- Melting Point
- 14.01 K | -259.14 °C | -434.45 °F
- Boiling Point
- 20.28 K | -252.87 °C | -423.17 °F
- Heat of Fusion
- 0.558 kJ/mol
- Heat of Vaporization
- 0.452 kJ/mol
- Specific Heat Capacity
- 14.304 J/g·K
Atomic Properties
- Atomic Radius
- 53 pm
- Covalent Radius
- 31 pm
- Electronegativity
- 2.2 (鲍林标度)
- Ionization Potential
- 13.5984 eV
- Atomic Volume
- 14.4 cm3/mol
- Thermal Conductivity
- 0.001815 W/cm·K
- Oxidation States
- -1, 1
- Abundance in Earth's crust
- 0.15%
- Abundance in Universe
- 75%
- CAS Number
- 1333-74-0
- PubChem CID Number
- 783
Applications
液氢是一种火箭燃料
同时它广泛用于发电站的冷却剂
他的两个较重的同位素(氘和氚)用于核聚变
还被用作焊接的保护气氛,比如原子氢焊接
氢是木星和其他大型气态行星主要的成分
- Stable Isotopes
- 1H, 2H
- Unstable Isotopes
3H, 4H, 5H, 6H, 7H