Beryllium
Atomic number
4
Atomic weight
9.012182
Discovery (year)
1797
Atomic radius (A)
1.13
Melting point (
o
C)
1278
Boiling point (
o
C)
2399
Density (g/cm
3
)
1.84
Specific heat (cal/g
o
C)
0.45
Ionization potential (eV)
9.322
Electron Affinity (eV)
0
