94
Pu
244
Plutonium
Element 94 · 244 u · f-block
actinide
Used in nuclear weapons and spacecraft power sources. One of the most toxic substances known to humanity.
Phase (STP)
Solid
Melting Point
640 °C
Boiling Point
3228 °C
Density
19.84 g/cm³
Electronegativity
1.28
Atomic Radius
175 pm
Ionization Energy
585 kJ/mol
Electron Affinity
—
Discovered
1940 · Glenn T. Seaborg
Electron Configuration
[Rn] 5f6 7s2
Electron Orbitals
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