Plutonium

Actinide

Symbol: Pu

Atomic Number: 94

Standard State: Solid

Atomic Mass: 244.0642

Electron Configuration: [Rn]7s2 5f6

Electronegativity: 1.28

Atomic Radius: 243

Ionization Energy: 6.06

Melting Point: 913

Boiling Point: 3501

Density: 19.84

Year Discovered: 1940