Platinum
Atomic number
78
Atomic weight
195.08
Discovery (year)
1748
Atomic radius (A)
1.39
Melting point (
o
C)
1772
Boiling point (
o
C)
3827
Density (g/cm
3
)
21.37
Specific heat (cal/g
o
C)
0.032
Ionization potential (eV)
9
Electron Affinity (eV)
2.128
