Plutonyo

Ang plutonyo (Iningles plutonium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Pu ug kaiphan nga atomik 94. Ang plutonyo mao ang aktinido.

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 Electron shells of plutonium (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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