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Ultimo aggiornamento di Mattia Cola - Lun, 11/03/2013 - 18:46

Beryllium

(From the mineral's name "beryllium":Be₃Al₂SiO₁₈)

SYMBOL: Be

ATOMIC NUMBER: 4

MOLAR MASS (g\mol): 9,01

NORMAL STATE: solid

DENSITY (g*cm-3): 1,85

MELTING POINT (°C): 1285

BOILING POINT (°C): 2470

IONIZZATION ENERGY (Kj\mol): 900, 1757

ELECTRON AFFINITY (Kj\mol): <0

ELECTRONEGATIVITY: 1,6

MAIN OXIDATION STATES: +2

ATOMIC RADIUS (pm): 113

IONIC RADIUS (pm): 34