11Na
Sodium
Alkali metal
Properties of Sodium
- Atomic number (Z)
- 11
- Symbol
- Na
- Name
- Sodium
- Atomic mass
- 22.99 u
- Period
- 3
- Group
- 1
- Family
- Alkali metals
- Classification
- Alkali metal
- Electron configuration
- [Ne] 3s¹
About Sodium
Sodium is a chemical element with symbol Na and atomic number 11 (atomic mass of about 22.99 u). It is classified as a alkali metal on the periodic table.
On the periodic table, Sodium is located in period 3, in group 1, belonging to the alkali metals family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Sodium is [Ne] 3s¹, which determines how it forms chemical bonds and takes part in reactions.