Samarium

Symbol SaAtomic number 62
Atomic mass
150.4
Thermal conductivity
0.133
Atomic radius
2.59
Covalent radius
1.62
Density
7.54
Atomic volume
19.95
Melting point
1350
Oxidation states
3,2
Boiling point
2064
Stable isotopes
4
Heat of vapor.
166.4
Electronegativity
1.17
Heat of fusion
8.63
First ionization
5.64
Specific heat
0.20
Electrical conduct.
...
Electron configuration

General descriptionNuclear data
Index

Periodic Table

Chemistry concepts
 
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Samarium

As a member of the fourteen member lanthanide series, this element has few properties which distinguish it from the other members of the series. All of them along with lanthanum, yttrium, and scandium occur in very small quantities in nature. The usual source is the mineral monazite, or monazite sand, which is a mixture of phosphates containing also some thorium phosphate.

Samarium has found recent use in the manufacture of rare earth magnets which produce very high magnetic field strengths with small masses.

Atomic dataNuclear data
Index

Periodic Table

Chemistry concepts

Reference
Pauling
Ch. 26
 
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Samarium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2)
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
62
144
143.911998
134.0226
1195.8
0
0.031
stable
...
...
62
147
146.914894
136.8198
1217.3
7/2
0.15
1.06x1011y
a
2.31
62
148
147.914819
137.7512
1225.4
0
0.113
7x1015y
a
1.99
62
149
148.917180
138.6849
1231.3
7/2
0.138
1016y
a
1.87
62
150
149.917272
139.6165
1239.3
0
0.074
stable
...
...
62
152
151.919729
141.4818
1253.1
0
0.267
stable
...
...
62
154
153.922205
143.3471
1267.0
0
0.227
stable
...
...
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
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