Xe
Xenon
Noble GasAtomic Number: 54 • Atomic Mass: 131.2900 u • Period: 5 • Group: 18
Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶
Phase: Gas
Electronegativity: 2.6
Physical & Chemical Properties
Physical Properties
- •Colorless, odorless, heavy noble gas
- •Nearly 5 times denser than air
- •Can be solidified at -112°C
- •Emits blue-white glow when excited in electric discharge
- •Low thermal conductivity
Melting Point
161.4 K (-111.75 °C, -169.15 °F)
Boiling Point
165.03 K (-108.12 °C, -162.62 °F)
Density
0.005887 g/cm³
Electronegativity
2.6 (Pauling scale)
Chemical Properties
- •Generally unreactive due to filled valence shell
- •Can form compounds with highly electronegative elements like fluorine
- •Known compounds include xenon difluoride (XeF₂), xenon tetrafluoride (XeF₄), etc.
- •Forms clathrates with water and some organic molecules
- •First noble gas shown to form true chemical bonds
Electron Configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶Electron configuration describes how electrons are distributed in atomic orbitals, showing how they are arranged in energy levels and subshells.