84
Po
209
Polonium
Element 84 · 209 u · p-block
post transition
A highly radioactive element discovered by Marie Curie. Named after her homeland, Poland. Extremely toxic and dangerous.
Phase (STP)
Solid
Melting Point
254 °C
Boiling Point
962 °C
Density
9.32 g/cm³
Electronegativity
2.0
Atomic Radius
190 pm
Ionization Energy
812 kJ/mol
Electron Affinity
174 kJ/mol
Discovered
1898 · Marie Curie
Electron Configuration
[Xe] 4f14 5d10 6s2 6p4
Electron Orbitals
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