Plutonium
94Pu
Sm ↑ Pu ↓ (Uqh) Periodic table neptunium ← plutonium → americium
Panagway
silvery white, tarnishing to dark gray in air
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	plutonium, Pu, 94
Paglitok	/pluːˈtoʊniəm/ [[Help:Pronunciation respelling key|ploo-Plantilya:Smallcaps all-nee-əm]]
Kategoriyang elemento	aktinido
Group, period, block	[[group element|]], 7, f
Gibug-aton sa atomo	(244)
Kontorno sa elektron	[Rn] 5f6 7s2 2, 8, 18, 32, 24, 8, 2
History
Pagkadiskobre	Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan (1940–1)
Physical properties
Phase	magahi
Density (near r.t.)	19.816 g·cm−3
Liquid density at m.p.	16.63 g·cm−3
Melting point	912.5 K, 639.4 °C, 1182.9 °F
Boiling point	3505 K, 3228 °C, 5842 °F
Heat of fusion	2.82 kJ·mol−1
Heat of vaporization	333.5 kJ·mol−1
Molar heat capacity	35.5 J·mol−1·K−1
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	8, 7, 6, 5, 4, 3, 2, 1 (amphoteric oxide)
Electronegativity	1.28 (Pauling scale)
Ionization energies	1st: 584.7 kJ·mol−1
Atomic radius	159 pm
Covalent radius	187±1 pm
Miscellanea
Crystal structure	monoclinic
Magnetic ordering	paramagnetic[1]
Electrical resistivity	(0 °C) 1.460 µΩ·m
Thermal conductivity	6.74 W·m−1·K−1
Thermal expansion	(25 °C) 46.7 µm·m−1·K−1
Speed of sound	2260 m·s−1
Young's modulus	96 GPa
Shear modulus	43 GPa
Poisson ratio	0.21
CAS registry number	7440-07-5
Most stable isotopes
Main article: Isotopes of plutonium
iso NA half-life DM DE (MeV) DP 238Pu trace 87.74 y SF 204.66[2] — α 5.5 234U 239Pu 100% 2.41 × 104 y SF 207.06 — α 5.157 235U 240Pu trace 6.5 × 103 y SF 205.66 — α 5.256 236U 241Pu syn 14 y β− 0.02078 241Am SF 210.83 — 242Pu trace 3.73 × 105 y SF 209.47 — α 4.984 238U 244Pu trace 8.08 × 107 y α 4.666 240U SF —
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Plantilya:Template reference list

1. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
2. ↑ Magurno, B.A.; Pearlstein, S. (eds.) Workshop on nuclear data evaluation methods and procedures, Upton, NY, USA, 22 Septmber 1980, vol. II (1981), pp. 835 ff