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Plutonium (Pu)
Atomic number: 94 · Category: actinide · Group 3 · Period 7 · Phase: Solid
Plutonium is a transuranic radioactive chemical element with symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states.
Atomic mass: 244
Density: 19.816
Melting point: 912.5 K
Boiling point: 3505 K
Appearance: silvery white, tarnishing to dark gray in air
Source: Wikipedia
Block: f
Molar heat: 35.5
CPK color:#006bff
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f6
Configuration (semantic): [Rn] 5f6 7s2
Shells: 2, 8, 18, 32, 24, 8, 2
Electronegativity (Pauling): 1.28
Electron affinity: -48.33
Ionization energies: 584.7
Periodic position
Group: 3
Period: 7
xpos: 8
ypos: 10
Spectral/Bohr images
Image
3D Model