84

Radioactive

Po

Polonium

(209)

Semimetal
Solid

Discovery

Curie, Marie & Pierre (1898)

Etymology

Latin

Meaning

Poland

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Simple cubic

Second crystal structure

Rhombohedral

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

254.0 °C

527.15 K

Boiling point

  (at 101.325 kPa)

1560.0 °C

1833.15 K

Density

  (at 21 °C and 101.325 kPa)

9.30 g/cm3

Electronegativity

2.00