54 Xe 131.294
Xenon
noble gas
Properties
- Atomic number
- 54
- Atomic mass
- 131.294 u
- Category
- noble gas
- Group
- 18
- Period
- 5
- Block
- p-block
- State (room temp)
- Gas
- Outer-shell electrons
- 8
- Electronegativity
- 2.6 (Pauling)
- Density
- -
- Melting point
- -111.75 °C
- Boiling point
- -108.1 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶
Noble-gas shorthand: [Kr] 4d¹⁰ 5s² 5p⁶
Electrons per shell: 2, 8, 18, 18, 8, which is 8 in the outermost shell.
Related: electron configuration, the Bohr model, valence electrons.
About Xenon
Xenon is a chemical element with symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas, that occurs in the Earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.
- Discovered by William Ramsay
- Appearance: colorless gas, exhibiting a blue glow when placed in a high voltage electric field
Xenon: frequently asked questions
- What is Xenon?
- Xenon (Xe) is the chemical element with atomic number 54. It is a nonmetal: specifically a noble gas, the group with full outer electron shells.
- What is the atomic number of Xenon?
- Xenon's atomic number is 54, which means every Xenon atom has 54 protons in its nucleus.
- What is the electron configuration of Xenon?
- The electron configuration of Xenon is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 (noble-gas shorthand: [Kr] 4d10 5s2 5p6). Its electrons are arranged in shells of 2, 8, 18, 18, 8, with 8 in the outermost shell.
- Is Xenon a metal or a nonmetal?
- Xenon is a nonmetal: specifically a noble gas, the group with full outer electron shells.
- What group and period is Xenon in?
- Xenon is in group 18 and period 5 of the periodic table.
- Is Xenon a solid, liquid, or gas?
- At room temperature, Xenon is a gas.
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.