4Be
Beryllium
Alkaline earth metal
Properties of Beryllium
- Atomic number (Z)
- 4
- Symbol
- Be
- Name
- Beryllium
- Atomic mass
- 9.012 u
- Period
- 2
- Group
- 2
- Family
- Alkaline earth metals
- Classification
- Alkaline earth metal
- Electron configuration
- [He] 2s²
About Beryllium
Beryllium is a chemical element with symbol Be and atomic number 4 (atomic mass of about 9.012 u). It is classified as a alkaline earth metal on the periodic table.
On the periodic table, Beryllium is located in period 2, in group 2, belonging to the alkaline earth metals family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Beryllium is [He] 2s², which determines how it forms chemical bonds and takes part in reactions.