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Properties of substance:
plutonium
Group of substances:
inorganic
Physical appearance:
metal
Empirical formula (Hill's system for organic substances):
Pu
Structural formula as text:
Pu
Molar/atomic mass: 239.05
Melting point (°C):
640
Boiling point (°C):
3235
Solubility (g/100 g of solvent):
mercury
: 0.015 (20°C) [
Ref.
]
mercury
: 0.64 (325°C) [
Ref.
]
water
: reaction [
Ref.
]
Numerical data:
Year of discovery: 1940
Density:
19.82 (25°C, g/cm
3
)
16.26 (640°C, g/cm
3
)
16.62 (664°C, g/cm
3
)
16.43 (788°C, g/cm
3
)
Half-life:
229
94
Pu = 120 s (α (100%))
230
94
Pu = 1.7 min (mass excess 36934 keV)
231
94
Pu = 8.6 min (β
+
(87%), α (13%))
232
94
Pu = 33.7 min (mass excess 38366 keV)
233
94
Pu = 20.9 min (β
+
(99.88%), α (0.12%))
234
94
Pu = 8.8 h (electron capture (about 94%), α (about 6%))
235
94
Pu = 25.3 min (β
+
(about 100%), α (0.0028%))
236
94
Pu = 2.858 y (α (about 100%), spontaneous fission (0.000000136%))
237
94
Pu = 45.2 d (electron capture (about 100%), α (0.0042%))
238
94
Pu = 87.7 y (α (about 100%), spontaneous fission (0.00000019%))
239
94
Pu = 24 110 y (α (about 100%); spontaneous fission (0.000 000 000 31%); mass excess 48589,9 keV)
240
94
Pu = 6564 y (α (about 100%), spontaneous fission (0.0000037%))
241
94
Pu = 14.35 y (β (about 100%), α (0.00245%))
242
94
Pu = 375 000 y (α (about 100%), spontaneous fission (0.00055%))
243
94
Pu = 4.956 h (β (100%))
244
94
Pu = 80 000 000 y (α (about 100%), spontaneous fission (0.121%))
245
94
Pu = 10.5 h (β (100%))
246
94
Pu = 10.84 d (β (100%))
247
94
Pu = 2.27 d (β (100%))
Vapour pressure (Torr):
0.01 (1463°C)
0.1 (1704°C)
1 (1955°C)
10 (2278°C)
100 (2710°C)
Electrode potential:
Pu
3+
+ 3e
-
→ Pu, E = -2.031 V (water, 25°C)
Pu
4+
+ e
-
→ Pu
3+
, E = 0.967 V (water, 25°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
0 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
0 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
51.5 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
32 (s)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
347 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
177.1 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
20.9 (g)
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
351
Enthalpy (heat) of fusion Δ
fus
H (kJ/mol)
2.824 (s) [
Ref.
]
References:
Encyclopedia of inorganic chemistry. - editor R. Bruce King, 2 Ed., 10 volume set. - 2005
Вредные химические вещества: Радиоактивные вещества. Справочник. - Л., 1990. - pp. 197 [Russian]
Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 570-584 [Russian]
Милюкова М.С., Гусев Н.И., Сентюрин И.Г., Скляренко И.С. Аналитическая химия плутония. - М.: Наука, 1965. - pp. 23-28 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 90, 306-307 [Russian]
Руководство по неорганическому синтезу. - Т.4, под ред. Брауэра Г. - М.: Мир, 1985. - pp. 1372-1376 [Russian]
Справочник по редким металлам. - М.: Мир, 1965. - pp. 511-580 [Russian]
Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 580-582 [Russian]
Химия актиноидов. - Т.2. - М.: Мир, 1997. - pp. 5-169 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
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