Polonium

Symbol | Po
Latin name | Polonium
Atomic number | 84
Period | 6
Element category | Metals
Relative atomic mass | 208.9824
Group | VI.A
Electronegativity | 2.0
Oxidation numbers | 2, 4, 6
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p4
Density [g/cm3] | 9.3
State | Solid
Melting point [°C] | 254
Boiling point [°C] | 962
Atomic radius [pm] | 135
Thermal conductivity [W m-1K-1] | 20
Discovery | 1898
1.st ionization energy [eV] | 8.4167
Stable isotopes | 0
Unstable isotopes | 33