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
Frequently asked questions
What is Xenon?
Xenon (Xe) is a noble gas, element number 54 on the periodic table. Used in car headlights.
What is the atomic number and atomic mass of Xenon?
Xenon has atomic number 54 and an atomic mass of about 131.29 g/mol.
What is the electron configuration of Xenon?
The electron configuration of Xenon is [Kr] 4d¹⁰ 5s² 5p⁶.
Where is Xenon on the periodic table?
Xenon sits in group 18, period 5, and is classified as a noble gas.