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Properties of substance:
lead
Group of substances:
inorganic
Physical appearance:
gray cubic metal
Empirical formula (Hill's system for organic substances):
Pb
Structural formula as text:
Pb
Molar/atomic mass: 207.2
Melting point (°C):
327.4
Boiling point (°C):
1745
Solubility (g/100 g of solvent):
lead iodide
: 0.01 (440°C) [
Ref.
]
lead iodide
: 0.18 (700°C) [
Ref.
]
lead(II) chloride
: 0.015 (600°C) [
Ref.
]
lead(II) chloride
: 0.04 (700°C) [
Ref.
]
mercury
: 1.32 (18°C) [
Ref.
]
water
: 0.0000311 [
Ref.
]
Numerical data:
Superconducting temperature (K): 7.1999
Density:
11.336 (20°C, g/cm
3
)
10.686 (327.4°C, d
4
)
Half-life:
178
82
Pb = 230 μs (α (about 100%))
179
82
Pb = 3.9 ms (α (100%))
180
82
Pb = 4.2 ms (α (100%))
181
82
Pb = 39.0 ms ()
182
82
Pb = 55 ms ()
183
82
Pb = 535 ms ()
184
82
Pb = 490 ms (α (80%))
185
82
Pb = 6.3 s (α (34%))
185m
82
Pb = 4.07 s (α (50%))
186
82
Pb = 4.82 s (α (40%))
187
82
Pb = 15.2 s ()
187m
82
Pb = 18.3 s ()
188
82
Pb = 25.1 s ()
188m
82
Pb = 1.15 μs (internal transition (100%))
189
82
Pb = 50.5 μs (β
+
(about 100%), α)
189m
82
Pb = 39 s (β
+
(about 100%), α)
190
82
Pb = 71 s ()
191
82
Pb = 1.33 min (β
+
(about 100%), α (0.51%))
192
82
Pb = 3.5 min (β
+
(about 100%), α (0.0059%))
193m
82
Pb = 5.8 min (β
+
(100%))
194
82
Pb = 10.7 min (β
+
(about 100%), α)
195
82
Pb = 15 min ()
196
82
Pb = 37 min (β
+
(about 100%), α)
197
82
Pb = 8.1 min (β
+
(100%))
198
82
Pb = 2.4 h (β
+
(100%))
199
82
Pb = 90 min (β
+
(100%))
200
82
Pb = 21.5 h (electron capture (100%))
201
82
Pb = 9.33 h (β
+
(100%))
202
82
Pb = 52 500 y (electron capture (100%))
203
82
Pb = 51.92 h (electron capture (100%))
204
82
Pb = stable (mass excess -25109,7 keV (isotopic abundance 1,4%))
204m
82
Pb = 67.2 min (internal transition (100%))
205
82
Pb = 15 300 000 y (electron capture (100%))
205m
82
Pb = 5.54 ms (internal transition (100%))
205n
82
Pb = 217 ns (internal transition (100%))
206
82
Pb = stable ( (isotopic abundance 24,1%))
206m
82
Pb = 125 μs (internal transition (100%))
206n
82
Pb = 202 ns (internal transition (100%))
207
82
Pb = stable ( (isotopic abundance 22,1%))
207m
82
Pb = 806 ms (internal transition (100%))
208
82
Pb = stable ( (isotopic abundance 52,4%))
208m
82
Pb = 500 ns (internal transition (100%))
209
82
Pb = 3.234 h (β
-
(100%))
210
82
Pb = 22.20 y (β
-
(100%), α (0.000 001 9%))
211
82
Pb = 36.164 min (β
-
(100%))
212
82
Pb = 10.64 h (β
-
(100%))
213
82
Pb = 10.2 min (β
-
(100%))
214
82
Pb = 27.06 min (β
-
(100%))
215
82
Pb = 2.34 min (β
-
(100%))
216
82
Pb = 1.65 min (β
-
(100%))
217
82
Pb = 20 s (β
-
(100%))
218
82
Pb = 15 s (β
-
(100%))
Vapour pressure (Torr):
1 (981°C)
Electrode potential:
Pb
4+
+ 2e
-
→ Pb
2+
, E = 1.694 V (water, 25°C)
Pb
4+
+ e
-
→ Pb
3+
, E = 1.8 V (water, 25°C)
Surface tension (mN/m):
445 (350°C)
Speed sound (m/s):
1020 (20°C, aggregative state - crystals, в стержне)
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)):
64.81 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
26.44 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
4.77
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
177.7
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
195.1 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
175.3 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
20.8 (g)
References:
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1364-1365
Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 350 [Russian]
Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
Неорганические синтезы. - Сб. 1. - М.: ИИЛ, 1951. - pp. 10 [Russian]
Полянский Н.Г. Свинец. - М.: Наука, 1986. - pp. 18-20 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 94 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 596 [Russian]
Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 595, 598 [Russian]
Успехи химии. - 1997. - Т.66, №2. - pp. 112 [Russian]
Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 299-301 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru