Xenon (Xe)
Xenon
Xenon (Xe) is a noble gas in period 5, group 18. Its relative atomic mass is 131.29 and the molar mass of the atom is 131.29 g/mol.
Atomic number 54
Atomic mass 131.29
Molar mass 131.29 g/mol
Category Noble gas Gas
Properties of xenon
| Atomic number | 54 |
|---|---|
| Symbol | Xe |
| Latin name | Xenon |
| Relative atomic mass | 131.29 |
| Molar mass | 131.29 g/mol |
| Group, period, block | 18, 5, p |
| Category | Noble gas |
| State at 20 °C | Gas |
| Electron configuration | [Kr] 4d¹⁰ 5s² 5p⁶ |
| Electronegativity (Pauling) | 2.6 |
Electron configuration of xenon
Electrons per shell
K2L8M18N18O8
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶
Noble-gas notation
54 protons · 54 electrons[Kr] 4d¹⁰ 5s² 5p⁶
Formula and compounds of xenon
Simple substanceXexenonMolar mass of Xe: 131.29 g/mol
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Frequently asked questions
The relative atomic mass of xenon is 131.29, so the molar mass of the atom is 131.29 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶. Noble-gas notation: [Kr] 4d¹⁰ 5s² 5p⁶.