Samarium

Samarium (Sm)

grundstof med atomnummer 62
Atomnummer62
Atommasse150.36
mass number152
Gruppe
Periode6
Blokf
proton62 p+
neutron90 n0
elektron62 e-
Animated Bohrs atommodel of Sm (Samarium)

Fysisk Egenskab

Atomradius
molar volume
Kovalent Radius
Metallic Radius
Ionisk radius
Crystal Radius
Van der Waals-radius
massefylde
Atomic Radii Of The Elements: Samarium0102030405060708090100110120130140150160170180190200210220230240pmAtomradiusKovalent RadiusMetallic RadiusVan der Waals-radius

Kemisk Egenskab

energi
proton affinity
electron affinity
ioniseringsenergi
ioniseringsenergi of Sm (Samarium)
Fordampningsvarme
smeltevarme
standard enthalpy of formation
elektron
Elektronskal2, 8, 18, 24, 8, 2
Bohrs atommodel: Sm (Samarium)
Valenselektron2
Elektronprikmodellen: Sm (Samarium)
electron configuration[Xe] 4f6 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f6 6s2
Enhanced Bohrs atommodel of Sm (Samarium)
Orbital Diagram of Sm (Samarium)
Oxidationstrin0, 1, 2, 3
Elektronegativitet
1.17
Electrophilicity Index
fundamental state of matter
stoffaseFast stof
gaseous state of matter
Kogepunkt
Smeltepunkt
critical pressure
critical temperature
trippelpunkt
appearance
farve
Silver
appearancesilvery white
Brydningsindeks
materialeegenskab
Varmeledningsevne
Termisk ekspansion
molar heat capacity
Varmefylde
Adiabateksponenten
electrical properties
typeConductor
specifik ledningsevne
Elektrisk resistivitet
superledning
Magnetisme
typeparamagnetic
magnetic susceptibility (Mass)
0,000000111 m³/Kg
magnetic susceptibility (Molar)
0,00000001669 m³/mol
magnetic susceptibility (Volume)
0,00081618
magnetic ordering
Curietemperaturen
Néel temperature
struktur
KrystalstrukturSimpel Trigonal (RHL)
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hårdhed
Kompressibilitetsmodul
Forskydningsmodul
E-modul
Poissons forhold
0,27
speed of sound
klassificering
KategoriLantanider, Lanthanides
CAS Group
IUPAC Group
Glawe Number27
Mendeleev Number23
Pettifor Number28
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

øvrige

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotrope
Neutron cross section
5.900
Neutron Mass Absorption
4,7
quantum number7F0
rumgruppe166 (R_3m)

Isotopes of Samarium

Stable Isotopes2
Unstable Isotopes39
Natural Isotopes7
Isotopic Composition15226.74%15226.74%15422.74%15422.74%14715.00%14715.00%14913.82%14913.82%14811.25%14811.25%1507.37%1507.37%1443.08%1443.08%

128Sm

mass number128
neutron number66
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

129Sm

mass number129
neutron number67
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
550 ± 100 ms
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1999
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

130Sm

mass number130
neutron number68
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato1999
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)

131Sm

mass number131
neutron number69
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
1,2 ± 0,2 s
spin5/2
nuclear quadrupole moment
opdagelsesdato1986
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

132Sm

mass number132
neutron number70
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
4 ± 0,3 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1989
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

133Sm

mass number133
neutron number71
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,89 ± 0,16 s
spin5/2
nuclear quadrupole moment
opdagelsesdato1977
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

134Sm

mass number134
neutron number72
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
9,5 ± 0,8 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1977
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

135Sm

mass number135
neutron number73
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
10,3 ± 0,5 s
spin7/2
nuclear quadrupole moment
opdagelsesdato1977
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.02%

136Sm

mass number136
neutron number74
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
47 ± 2 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1982
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

137Sm

mass number137
neutron number75
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
45 ± 1 s
spin9/2
nuclear quadrupole moment
opdagelsesdato1986
Paritet-

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

138Sm

mass number138
neutron number76
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
3,1 ± 0,2 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1982
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

139Sm

mass number139
neutron number77
Relative Atomic Mass
g-factor
-1,06 ± 0,04
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,57 ± 0,1 m
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1971
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

140Sm

mass number140
neutron number78
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
14,82 ± 0,12 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1967
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

141Sm

mass number141
neutron number79
Relative Atomic Mass
g-factor
-1,48 ± 0,04
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
10,2 ± 0,2 m
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1967
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

142Sm

mass number142
neutron number80
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
72,49 ± 0,05 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1959
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)5%

143Sm

mass number143
neutron number81
Relative Atomic Mass
g-factor
0,67333333333333 ± 0,013333333333333
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
8,75 ± 0,06 m
spin3/2
nuclear quadrupole moment
0,4 ± 0,2
opdagelsesdato1956
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)40%
ϵ (electron capture)60%

144Sm

mass number144
neutron number82
Relative Atomic Mass
g-factor
0
natural abundance
3,08 ± 0,04
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato1933
Paritet+

decay modeIntensitet
+ (double β+ decay)

145Sm

mass number145
neutron number83
Relative Atomic Mass
g-factor
-0,32 ± 0,0031428571428571
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
340 ± 3 d
spin7/2
nuclear quadrupole moment
-0,6 ± 0,07
opdagelsesdato1947
Paritet-

decay modeIntensitet
ϵ (electron capture)100%

146Sm

mass number146
neutron number84
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
68 ± 7 My
spin0
nuclear quadrupole moment
0
opdagelsesdato1953
Paritet+

decay modeIntensitet
α (α emission)100%

147Sm

mass number147
neutron number85
Relative Atomic Mass
g-factor
-0,23114285714286 ± 0,0004
natural abundance
15 ± 0,14
radioaktivitet☢️ radioactive element
halveringstid
106,6 ± 0,5 Gy
spin7/2
nuclear quadrupole moment
-0,26 ± 0,03
opdagelsesdato1933
Paritet-

decay modeIntensitet
α (α emission)100%

148Sm

mass number148
neutron number86
Relative Atomic Mass
g-factor
0
natural abundance
11,25 ± 0,09
radioaktivitet☢️ radioactive element
halveringstid
6,3 ± 1,3 Py
spin0
nuclear quadrupole moment
0
opdagelsesdato1933
Paritet+

decay modeIntensitet
α (α emission)100%

149Sm

mass number149
neutron number87
Relative Atomic Mass
g-factor
-0,19077142857143 ± 0,00031428571428571
natural abundance
13,82 ± 0,1
radioaktivitet☢️ radioactive element
halveringstid
spin7/2
nuclear quadrupole moment
0,075 ± 0,008
opdagelsesdato1933
Paritet-

decay modeIntensitet
α (α emission)

150Sm

mass number150
neutron number88
Relative Atomic Mass
g-factor
0
natural abundance
7,37 ± 0,09
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
opdagelsesdato1934
Paritet+

151Sm

mass number151
neutron number89
Relative Atomic Mass
g-factor
-0,1442 ± 0,00024
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
94,6 ± 0,6 y
spin5/2
nuclear quadrupole moment
0,71 ± 0,07
opdagelsesdato1947
Paritet-

decay modeIntensitet
β (β decay)100%

152Sm

mass number152
neutron number90
Relative Atomic Mass
g-factor
0
natural abundance
26,74 ± 0,09
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
opdagelsesdato1933
Paritet+

153Sm

mass number153
neutron number91
Relative Atomic Mass
g-factor
-0,014 ± 0,002
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
46,2846 ± 0,0023 h
spin3/2
nuclear quadrupole moment
1,3 ± 0,12
opdagelsesdato1938
Paritet+

decay modeIntensitet
β (β decay)100%

154Sm

mass number154
neutron number92
Relative Atomic Mass
g-factor
0
natural abundance
22,74 ± 0,14
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato1933
Paritet+

decay modeIntensitet
(double β decay)

155Sm

mass number155
neutron number93
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
22,18 ± 0,06 m
spin3/2
nuclear quadrupole moment
1,13 ± 0,13
opdagelsesdato1951
Paritet-

decay modeIntensitet
β (β decay)100%

156Sm

mass number156
neutron number94
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
9,4 ± 0,2 h
spin0
nuclear quadrupole moment
0
opdagelsesdato1951
Paritet+

decay modeIntensitet
β (β decay)100%

157Sm

mass number157
neutron number95
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
8,03 ± 0,07 m
spin3/2
nuclear quadrupole moment
opdagelsesdato1973
Paritet-

decay modeIntensitet
β (β decay)100%

158Sm

mass number158
neutron number96
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
5,3 ± 0,03 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1970
Paritet+

decay modeIntensitet
β (β decay)100%

159Sm

mass number159
neutron number97
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
11,37 ± 0,15 s
spin5/2
nuclear quadrupole moment
opdagelsesdato1986
Paritet-

decay modeIntensitet
β (β decay)100%

160Sm

mass number160
neutron number98
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
9,6 ± 0,3 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1986
Paritet+

decay modeIntensitet
β (β decay)100%

161Sm

mass number161
neutron number99
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
4,8 ± 0,4 s
spin7/2
nuclear quadrupole moment
opdagelsesdato1998
Paritet+

decay modeIntensitet
β (β decay)100%

162Sm

mass number162
neutron number100
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,7 ± 0,3 s
spin0
nuclear quadrupole moment
0
opdagelsesdato2005
Paritet+

decay modeIntensitet
β (β decay)100%

163Sm

mass number163
neutron number101
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
1,3 ± 0,5 s
spin1/2
nuclear quadrupole moment
0
opdagelsesdato2012
Paritet-

decay modeIntensitet
β (β decay)100%

164Sm

mass number164
neutron number102
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
1,43 ± 0,24 s
spin0
nuclear quadrupole moment
0
opdagelsesdato2012
Paritet+

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)

165Sm

mass number165
neutron number103
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
980 ± 210 ms
spin5/2
nuclear quadrupole moment
opdagelsesdato2012
Paritet-

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)

166Sm

mass number166
neutron number104
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
800 ± 630 ms
spin0
nuclear quadrupole moment
0
opdagelsesdato2017
Paritet+

decay modeIntensitet
β (β decay)100%

167Sm

mass number167
neutron number105
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
spin7/2
nuclear quadrupole moment
opdagelsesdato2018
Paritet-

decay modeIntensitet
β (β decay)
β n (β-delayed neutron emission)

168Sm

mass number168
neutron number106
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato2018
Paritet+

decay modeIntensitet
β (β decay)
β n (β-delayed neutron emission)
Samarium 1

historie

opdager eller opfinderPaul Émile Lecoq de Boisbaudran
fundstedFrance
opdagelsesdato1879
etymologiNamed after the mineral samarskite.
udtaleseh-MER-i-em (engelsk)

source

Forekomst
Abundance in Earth's crust
natural abundance (verdenshave)
natural abundance (menneskelige krop)
natural abundance (Meteoroid)
0,000017 %
natural abundance (Solen)
0,0000001 %
Abundance in Universe
0,0000005 %

Nuclear Screening Constants

1s1.2217
2p4.269
2s16.2652
3d13.7711
3p19.5815
3s19.9736
4d33.7604
4f38.4684
4p30.912
4s29.7076
5p45.719
5s43.751
6s53.9882