54
Xe
Xenon
131.2936
2818188
#54
Xenon
noble gas· Gas·131.2936 u
Xenon is a chemical element with symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas, that occurs in the Earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.
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Identity
- Symbol
- Xe
- Atomic Number
- 54
- Atomic Mass
- 131.2936 u
- Category
- noble gas
- Block
- p-block
- Period
- 5
- Group
- 18
- Appearance
- colorless gas, exhibiting a blue glow when placed in a high voltage electric field
- Year Discovered
- 1898 CE
- Discovered By
- William Ramsay
- Named By
- stranger
Electrons
- Configuration
- [Kr] 4d10 5s2 5p6
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6
- Shells
- 2, 8, 18, 18, 8
- Electronegativity
- 2.6
- Electron Affinity
- -77
- Oxidation States
- 0
- Ionization Energies
- 1170.4, 2046.4, 3099.4
Physical Properties

- State at
- Gas
- Melting Point
- 161.4
- Boiling Point
- 165.051
- Density
- 5.894
- Crystal Structure
- FCC
- Magnetic Ordering
- Diamagnetic
Mechanical
- Atomic Radius
- 108 pm
- Covalent Radius
- 140 pm
- Van der Waals
- 216 pm
Thermal & Electrical
- Thermal Conductivity
- 0.00569 W/(m K) W/(m·K)
- Specific Heat
- 158 J/(kg K) J/(g·K)
- Heat of Vaporization
- 12.6 kJ/mol kJ/mol
- Heat of Fusion
- 2.27 kJ/mol kJ/mol
Abundance
- Universe
- 10.0 ppb
- Sun
- 0
- Meteorite
- 0
- Earth's Crust
- 30.0 ppt
- Ocean
- 50.0 ppt
- Human Body
- 0