Xenon

Atomic symbol: Xe
Atomic number: 54
Atomic mass: 131.29

Appearance: Colorless gas at 25°C

Group: 18\ Period: 5
Series: Noble gases
Block: p
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶

An inert, colorless, odorless, and dense gas used in lighting; in an electric field, xenon emits a blue glow.

Fun Fact! Xenon is used by NASA in their Xenon Ion Drive engines to propel spacecraft on deep space missions.