8O
Oxygen
Nonmetal
Properties of Oxygen
- Atomic number (Z)
- 8
- Symbol
- O
- Name
- Oxygen
- Atomic mass
- 15.999 u
- Period
- 2
- Group
- 16
- Family
- Chalcogens
- Classification
- Nonmetal
- Electron configuration
- [He] 2s² 2p⁴
About Oxygen
Oxygen is a chemical element with symbol O and atomic number 8 (atomic mass of about 15.999 u). It is classified as a nonmetal on the periodic table.
On the periodic table, Oxygen is located in period 2, in group 16, belonging to the chalcogens family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Oxygen is [He] 2s² 2p⁴, which determines how it forms chemical bonds and takes part in reactions.