18Ar
Argon
Noble gas
Properties of Argon
- Atomic number (Z)
- 18
- Symbol
- Ar
- Name
- Argon
- Atomic mass
- 39.948 u
- Period
- 3
- Group
- 18
- Family
- Noble gases
- Classification
- Noble gas
- Electron configuration
- [Ne] 3s² 3p⁶
About Argon
Argon is a chemical element with symbol Ar and atomic number 18 (atomic mass of about 39.948 u). It is classified as a noble gas on the periodic table.
On the periodic table, Argon is located in period 3, in group 18, belonging to the noble gases family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Argon is [Ne] 3s² 3p⁶, which determines how it forms chemical bonds and takes part in reactions.