4 - Beryllium alkaline earth metal
Discovered by Louis Vauquelin in 1798
- Atomic Radius (Å)
Beryllium is a chemical element with symbol Be and atomic number 4. It is created through stellar nucleosynthesis and is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements in minerals.
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 2 | 2 in 2s |
9.01 u
Atomic Mass
1.4 Å
Atomic Radius
2742 K
Boiling Point
0.96 Å
Covalent Radius
1.85 g/cm³
Density
-4.80e+1
Electron Affinity
1.57
Electronegativity
9.32 eV
First Ionization Energy
1560.15 K
Melting Point
2
Number of Shells
2
Electron Valency
4
Atomic Number
2, 2
Electron Shell Occupations
1.82 J/(g K)
Specific Heat
