Xenon (Xe)
Xenon (Xe, element 54) is a noble gas in group 18, period 5. Atomic mass 131.293, electron configuration [Kr] 4d¹⁰ 5s² 5p⁶, uses and facts.
About Xenon
Xenon is a noble gas with the symbol Xe and atomic number 54. It is a gas at room temperature, and it sits in group 18, period 5 of the periodic table. Xenon was discovered in 1898 by William Ramsay.
Xenon key facts
- Atomic number: 54
- Symbol: Xe
- Atomic mass: 131.293 u
- Category: noble gas
- Group: 18
- Period: 5
- State at room temperature: gas
- Electron configuration: [Kr] 4d¹⁰ 5s² 5p⁶
- Electronegativity (Pauling): not assigned
- Melting point: 161.4 K (-111.75 °C)
- Boiling point: 165.1 K (-108.05 °C)
- Density: 0.005894 g/cm³
- Common oxidation states: 0, +2, +4, +6, +8
Electron configuration
The electron configuration of xenon is [Kr] 4d¹⁰ 5s² 5p⁶. The part in brackets is the noble gas core; the rest shows how the outer electrons fill their subshells. Xenon has 8 valence electrons.
Uses of xenon
- Anesthesia
- Car headlights
- Ion propulsion
Did you know?
Xenon was the first noble gas made to form a true chemical compound, disproving the theory they never react.
Other elements in group 18 and neighbours
Frequently asked questions
What is the atomic number of xenon?
The atomic number of xenon is 54, which means every xenon atom has 54 protons.
What is the electron configuration of xenon?
The electron configuration of xenon is [Kr] 4d¹⁰ 5s² 5p⁶.
What group and period is xenon in?
Xenon is a noble gas in group 18, period 5.
What state is xenon at room temperature?
Xenon is a gas at room temperature.
What is xenon used for?
Xenon is used for anesthesia, car headlights, ion propulsion.