54 Xe
Noble gas
Xenon
Used in car headlights.
Properties of Xenon
- Atomic number (Z)
- 54
- Symbol
- Xe
- Atomic mass
- 131.29 g/mol
- Category
- Noble gas
- Group
- 18
- Period
- 5
- Electron configuration
- [Kr] 4d¹⁰ 5s² 5p⁶
- Electronegativity (Pauling)
- 2.6
- Atomic radius
- 108 pm
- First ionization energy
- 1170 kJ/mol
- Melting point
- 161.4 K (-111.7 °C)
- Boiling point
- 165.03 K (-108.1 °C)
- Density
- 0.005887 g/cm³
- Phase at 25 °C
- Gas
- Discovered
- Discovered in 1898