Main page (Russian)
Search in database (English)
Properties of substance:
erbium
Group of substances:
inorganic
Physical appearance:
hexagonal metal
Empirical formula (Hill's system for organic substances):
Er
Structural formula as text:
Er
Molar/atomic mass: 167.26
Melting point (°C):
1525
Boiling point (°C):
2860
Solubility (g/100 g of solvent):
water
: reaction [
Ref.
]
Numerical data:
Year of discovery: 1843
Density:
9.06 (20°C, g/cm
3
)
Half-life:
145
68
Er = 900 ms (β
+
(100%), β
+
p (?))
145m
68
Er = 1.0 s ()
146
68
Er = 1.7 s (β
+
(100%), β
+
p (?))
147
68
Er = 3.2 s (β
+
(100%), β
+
p (?))
147m
68
Er = 1.6 s (β
+
(100%), β
+
p (?))
148
68
Er = 4.6 s (β
+
(100%), β
+
p (about 0.15%))
148m
68
Er = 13 μs (internal transition (100%))
149
68
Er = 4 s (β
+
(100%), β
+
p (7%))
149m
68
Er = 8.9 s (β
+
(96.5%), internal transition (3.5%), β
+
p (0.18%))
149n
68
Er = 610 ns (internal transition (100%))
149p
68
Er = 4.8 μs (internal transition (100%))
150
68
Er = 18.5 s (β
+
(100%))
150m
68
Er = 2.55 μs (internal transition (100%))
151
68
Er = 23.5 s (β
+
(100%))
151m
68
Er = 580 ms (internal transition (95.3%), β
+
(4.7%))
151n
68
Er = 420 ns (internal transition (100%))
152
68
Er = 10.3 s (α (90%), β
+
(10%))
153
68
Er = 37.1 s (α (53%), β
+
(47%))
153m
68
Er = 373 ns (internal transition (100%))
153n
68
Er = 248 ns (internal transition (100%))
154
68
Er = 3.73 min (β
+
(about 100%), α (0.47%))
155
68
Er = 5.3 min (β
+
(about 100%), α (0.022%))
156
68
Er = 19.5 min (β
+
(100%), α (0.000 017%))
157
68
Er = 18.65 min (β
+
(100%))
157m
68
Er = 76 ms (internal transition (100%))
158
68
Er = 2.29 h (electron capture (100%))
159
68
Er = 36 min (β
+
(100%))
159m
68
Er = 337 ns (internal transition (100%))
159n
68
Er = 590 ns (internal transition (100%))
160
68
Er = 28.58 h (electron capture (100%))
161
68
Er = 3.21 h (β
+
(100%))
161m
68
Er = 7.5 μs (internal transition (100%))
162
68
Er = stable ( (isotopic abundance 0,139%))
162m
68
Er = 88 ns (internal transition (100%))
163
68
Er = 75.0 min (β
+
(100%))
163m
68
Er = 580 ns (internal transition (100%))
164
68
Er = stable ( (isotopic abundance 1,601%))
164m
68
Er = 68 ns (internal transition (100%))
165
68
Er = 10.36 h (electron capture (100%))
165m
68
Er = 250 ns (internal transition (100%))
165n
68
Er = 370 ns (internal transition (100%))
166
68
Er = stable ( (isotopic abundance 33,503%))
167
68
Er = stable ( (isotopic abundance 22,869%))
167m
68
Er = 2.269 s (internal transition (100%))
168
68
Er = stable ( (isotopic abundance 26,978%))
168m
68
Er = 109.0 ns (internal transition (100%))
169
68
Er = 9.392 d (β
-
(100%))
169m
68
Er = 285 ns (internal transition (100%))
169n
68
Er = 200 ns (internal transition (100%))
170
68
Er = stable ( (isotopic abundance 14,91%))
171
68
Er = 7.516 h (β
-
(100%))
171m
68
Er = 210 ns (internal transition (100%))
172
68
Er = 49.3 h (β
-
(100%))
172m
68
Er = 579 ns (internal transition (100%))
173
68
Er = 1.434 min (β
-
(100%))
174
68
Er = 3.2 min (β
-
(100%))
174m
68
Er = 3.9 s (internal transition (100%))
175
68
Er = 1.2 min (β
-
(100%))
Electrode potential:
Er
3+
+ 3e
-
→ Er, E = -2.296 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)):
73.2 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
28.12 (s)
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
19.9
ΔH
sublimation
(kJ/mol):
261
References:
Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 52 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 114 [Russian]
Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 487-488 [Russian]
What information do you need?
© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
Search in database (English)