Periodic table of the elements
BismuthPoloniumAstatine
84
Po
Polonium
(209)
2
8
18
32
18
6
84
Po
Polonium
(209)
2
8
18
32
18
6
General
NamePolonium
SymbolPo
Number84
Chemical seriesMetalloids
Group / Period16 / 6
Blockp-block
CAS registry number7440-08-6

Polonium is a radioactive element

Physical properties
Statesolid
Density9.4 g/cm3
Melting point527 K (254 °C, 489 °F)
Boiling point1235 K (962 °C, 1764 °F)
Critical point

Atomic properties
Atomic Weight(209) g/mol
Crystal structurecubic
Electronegativity2.00
Atomic radius190 pm
Atomic radius (calculated)135 pm
Electron configuration[Xe] 6s2 4f14 5d10 6p4
Electrons per shell2, 8, 18, 32, 18, 6
Number of protons84
Number of neutrons125

Other languages
SpanishPolonio
PortuguesePolónio
FrenchPolonium
GermanPolonium
ItalianPolonio
RussianПолоний
PolishPolon
Chinese
Arabicبولونيوم
TurkishPolonyum
DutchPolonium


Periodic table of the elements
BismuthPoloniumAstatine