Template:Infobox plutonium

Plutonium, ₉₄Pu

Two shiny pellets of plutonium of about 3 cm in diameter
Plutonium
Pronunciation	/pluːˈtoʊniəm/ ​(ploo-TOH-nee-əm)
Allotropes	see Allotropes of plutonium
Appearance	silvery white, tarnishing to dark gray in air
Mass number	[244]
Plutonium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Sm ↑ Pu ↓ — neptunium ← plutonium → americium
Atomic number (Z)	94
Group	f-block groups (no number)
Period	period 7
Block	f-block
Electron configuration	[Rn] 5f6 7s2
Electrons per shell	2, 8, 18, 32, 24, 8, 2
Physical properties
Phase at STP	solid
Melting point	912.5 K ​(639.4 °C, ​1182.9 °F)
Boiling point	3505 K ​(3228 °C, ​5842 °F)
Density (at 20° C)	19.85 g/cm3 (239Pu)
when liquid (at m.p.)	16.63 g/cm3
Heat of fusion	2.82 kJ/mol
Heat of vaporization	333.5 kJ/mol
Molar heat capacity	35.5 J/(mol·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1756 1953 2198 2511 2926 3499
Atomic properties
Oxidation states	common: +4 +2,? +3,, +5, +6, +7, +8
Electronegativity	Pauling scale: 1.28
Ionization energies	1st: 584.7 kJ/mol
Atomic radius	empirical: 159 pm
Covalent radius	187±1 pm
Color lines in a spectral range Spectral lines of plutonium
Other properties
Natural occurrence	from decay
Crystal structure	​monoclinic (mP16)
Lattice constants	Monoclinic crystal structure for plutonium a = 0.6183 nm b = 0.4822 nm c = 1.0964 nm β = 101.79° (at 20 °C)
Thermal expansion	49.6×10−6/K (at 20 °C)
Thermal conductivity	6.74 W/(m⋅K)
Electrical resistivity	1.460 µΩ⋅m (at 0 °C)
Magnetic ordering	paramagnetic
Young's modulus	96 GPa
Shear modulus	43 GPa
Speed of sound	2260 m/s
Poisson ratio	0.21
CAS Number	7440-07-5
History
Naming	after dwarf planet Pluto, itself named after classical god of the underworld Pluto
Discovery	Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan (1940–1941)
Isotopes of plutonium
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 236Pu synth 2.858 y α 232U SF – 238Pu trace 87.7 y α 234U SF – 239Pu trace 2.411×104 y α 235U SF – 240Pu trace 6.561×103 y α 236U SF – 241Pu synth 14.329 y β− 241Am α 237U SF – 242Pu synth 3.75×105 y α 238U SF – 244Pu trace 8.13×107 y α 240U SF –

Pu · Plutonium
Np ← ibox Np	iso 94 Pu  [] IB-Pu [] IBisos []	→ Am ibox Am
File:Symbol category class.svg cat:Pu (0) File:Symbol category class.svg cat:Pu-isotopes (0) File:Commons-logo.svg Commons File:Wikidata-logo.svg Wikidata:Q1102 File:Wiktionary-logo.svg Wiktionary
indexes by PT (page)

child table, as reused in {IB-Pu}
Main isotopes of plutonium
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 236Pu synth 2.858 y α 232U SF – 238Pu trace 87.7 y α 234U SF – 239Pu trace 2.411×104 y α 235U SF – 240Pu trace 6.561×103 y α 236U SF – 241Pu synth 14.329 y β− 241Am α 237U SF – 242Pu synth 3.75×105 y α 238U SF – 244Pu trace 8.13×107 y α 240U SF –

Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt)	caption: alt:
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
most stable isotope
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (0) · (this table: )

References

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