Berillium |
Simbool | Be |
---|---|
Latynse naam | Beryllium |
Atoomgetal | 4 |
Periode | 2 |
Element kategorie | Alkaliese aardmetale |
Relatieve atomiese massa | 9.012182 |
Groep | II.A |
Electronegativiteit | 1.5 |
Oksidering nommers | 2 |
Elektronkonfigurasie | 1s2 2s2 |
Digtheid [g/cm3] | 1.828 |
Staat | Vaste stof |
Smeltpunt [°C] | 1278 |
Kookpunt [°C] | 2970 |
Atoomradius [pm] | 112 |
Covalent radius [pm] | 90 |
Termiese geleidingsvermoë [W m-1K-1] | 200 |
Hitte kapasiteit [J K-1g-1] | 1.825 |
Ontdekking | 1828 |
Hardheid [Mohs-skaal] | 5.0-5.5 |
Vickers se hardheid [MPa] | 1670 |
Brinell-hardheid [MPa] | 600 |
Young's modulus [GPa] | 287 |
Elektriese geleiding [S m-1] | 2.5 · 107 |
Shear modulus [GPa] | 132 |
1ste ionisasie-energie [eV] | 9.3226 |
2de ionisasie-energie [eV] | 18.211 |
3de ionisasie-energie [eV] | 153.893 |
Stabiele isotope | 1 |
Onstabiele isotope | 3 |