Beryllium

Be Beryllium Alkalai Earth Metal

 

Atomic number:  4 Atomic weight:  9.012182
Shells:  2,2 Orbitals:  [He] 2s2
Melting point:  1287°C Boiling point:  2472°C
Covalent radius:  0.90 Å Atomic volume:  5.0 cm³/mol
Atomic radius:  1.40 Å Ionic radius:  .45 (+2) Å
Electronegativity:  1.57 Oxidation states:  
1st ionization pot.:  9.3226 V 2nd ionization pot.:  18.211 V
3rd ionization pot.:  153.893 V Specific heat:  1.82 J/gK
Heat of fusion:  12.20 kJ/mol Heat of vapor.:  292.40 kJ/mol
Thermal conduct.:  2.00 W/cmK Electrical conduct.:  0.313 10^6/cm ohm
Density:  1.848 g/cm³ Valence:  2