Boron
Atomic number
5
Atomic weight
10.811
Discovery (year)
1808
Atomic radius (A)
0.9
Melting point (
o
C)
2300
Boiling point (
o
C)
2550
Density (g/cm
3
)
2.53
Specific heat (cal/g
o
C)
0.309
Ionization potential (eV)
8.298
Electron Affinity (eV)
0.28
