| Symbol |
Be |
|
| Atomic Number |
4 |
Relative Atomic Mass
12C = 12.0000 |
9.012182 |
Atomic Radius
pm |
113 |
First Ionisation Energy
kJ mol-1 |
899.4 |
| Electronegativity |
1.57 |
Density
kg m-3 |
1847.7 [293 K] |
Molar Volume
cm3 |
4.88 |
Thermal Conductivity
W m-1 K-1 |
200 [300 K] |
Melting Point
K |
1551 |
Boiling Point
K |
3243 (under pressure) |
| Number of Isotopes |
6 |
Ground State Electron
Configuration |
[He]2s2 |
| Term Symbol |
1S0 |
| Discovery |
Discovered by N.L. Vauquelin (Paris, France) in 1797. Isolated by F. Woehler (Berlin, Germany) in 1828 and independantly by A.A.B. Bussy (Paris, France) |
| Name Derived From |
Greek beryllos meaning 'beryl' |
Name in Other
Languages |
 Croatian | Berilij |
 Danish | beryllium |
 Dutch | beryllium |
 Finnish | beryllium |
 French | béryllium |
 German | Beryllium |
 Italian | berillio |
 Norwegian | beryllium |
 Portuguese | berílio |
 Spanish | berilio |
 Swedish | beryllium |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
