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Samarium
Samarium




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What is Samarium?

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1 Periodic Table

1.1 Symbol

Sm

1.2 Group Number

Not Available
Rank: N/A (Overall)
Gadolinium
0 17

1.3 Period Number

6
Rank: 2 (Overall)
Lithium
2 7

1.4 Block

f block

1.5 Element Family

Lanthanide

1.6 CAS Number

7440199
Rank: 60 (Overall)
Aluminium
7429905 54386242

1.7 Space Group Name

R_ 3m

1.8 Space Group Number

166.00
Rank: 6 (Overall)
Plutonium
11 229

2 Facts

2.1 Interesting Facts

  • Samarium metals helps stimulating body metabolism.
  • Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.

2.2 Sources

Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Lecoq de Boisbaudran

2.3.2 Discovery

In 1879

2.4 Abundance

2.4.1 Abundance In Universe

5 * 10-7 %
Rank: 19 (Overall)
Thallium
5E-09 0.11

2.4.2 Abundance In Sun

~0.0000001 %
Rank: 26 (Overall)
Beryllium
1E-08 0.1

2.4.3 Abundance In Meteorites

0.00 %
Rank: 37 (Overall)
Gold
1.7E-07 22

2.4.4 Abundance In Earth's Crust

0.00 %
Rank: 29 (Overall)
Radium
9.9E-12 8.1

2.4.5 Abundance In Oceans

0.00 %
Rank: 40 (Overall)
Protactinium
2E-23 1.1

2.4.6 Abundance In Humans

Not Available
Rank: N/A (Overall)
Radium
1E-13 1.4

3 Uses

3.1 Uses & Benefits

  • Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
  • Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.

3.1.1 Industrial Uses

Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry

3.1.2 Medical Uses

NA

3.1.3 Other Uses

Alloys, In Nuclear Reactors

3.2 Biological Properties

3.2.1 Toxicity

Slightly Toxic

3.2.2 Present in Human Body

27% - Lanthanide Series Metals have it !

3.2.3 In Blood

0.01 Blood/mg dm-3
Rank: 22 (Overall)
Plutonium
0 1970

3.2.4 In Bone

Not Available
Rank: N/A (Overall)
Plutonium
0 170000

4 Physical

4.1 Melting Point

1,072.00 °C
Rank: 41 (Overall)
Francium
27 3410

4.2 Boiling Point

1,900.00 °C
Rank: 52 (Overall)
Flerovium
147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Silvery White

4.3.3 Luster

Lustrous

4.4 Hardness

4.4.1 Mohs Hardness

Not Available
Rank: N/A (Overall)
Cesium
0.2 8.5

4.4.2 Brinell Hardness

441.00 MPa
Rank: 27 (Overall)
Cesium
0.14 3490

4.4.3 Vickers Hardness

412.00 MPa
Rank: 24 (Overall)
Palladium
121 3430

4.5 Speed of Sound

2,130.00 m/s
Rank: 42 (Overall)
Thallium
818 16200

4.6 Optical Properties

4.6.1 Refractive Index

Not Available
Rank: N/A (Overall)
Mercury
1.000933 1.7229

4.6.2 Reflectivity

Not Available
Rank: N/A (Overall)
Molybdenum
58 97

4.7 Allotropes

No - Lanthanide Series Metals has it !

4.7.1 α Allotropes

Not Available

4.7.2 β Allotropes

Not Available

4.7.3 γ Allotropes

Not Available

5 Chemical

5.1 Chemical Formula

Sm

5.2 Isotopes

5.2.1 Known Isotopes

30
Rank: 9 (Overall)
Tennessine
0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

1.17
Rank: 40 (Overall)
Francium
0.7 2.54

5.3.2 Sanderson Electronegativity

Not Available
Rank: N/A (Overall)
Cesium
0.22 2.56

5.3.3 Allred Rochow Electronegativity

1.07
Rank: 32 (Overall)
Cesium
0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

Not Available
Rank: N/A (Overall)
Cesium
0.62 2.48

5.3.5 Allen Electronegativity

Not Available
Rank: N/A (Overall)
Cesium
0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

2.83
Rank: 14 (Overall)
Gold
1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

544.50 kJ/mol
Rank: 72 (Overall)
Cesium
375.7 26130

5.5.2 2nd Energy Level

1,070.00 kJ/mol
Rank: 75 (Overall)
Ruthenium
710.2162 28750

5.5.3 3rd Energy Level

2,260.00 kJ/mol
Rank: 59 (Overall)
Osmium
1600 34230

5.5.4 4th Energy Level

3,990.00 kJ/mol
Rank: 37 (Overall)
Thorium
2780 37066

5.5.5 5th Energy Level

Not Available
Rank: N/A (Overall)
Dubnium
4305.2 97510

5.5.6 6th Energy Level

Not Available
Rank: N/A (Overall)
Seaborgium
5715.8 105800

5.5.7 7th Energy level

Not Available
Rank: N/A (Overall)
Bohrium
7226.8 114300

5.5.8 8th Energy Level

Not Available
Rank: N/A (Overall)
Hassium
8857.4 125300

5.5.9 9th Energy Level

Not Available
Rank: N/A (Overall)
Yttrium
14110 134700

5.5.10 10th Energy Level

Not Available
Rank: N/A (Overall)
Strontium
17100 144300

5.5.11 11th Energy Level

Not Available
Rank: N/A (Overall)
Yttrium
19900 169988

5.5.12 12th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
22219 189368

5.5.13 13th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
26930 76015

5.5.14 14th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
29196 86450

5.5.15 15th Energy Level

Not Available
Rank: N/A (Overall)
Manganese
41987 97510

5.5.16 16th Energy Level

Not Available
Rank: N/A (Overall)
Iron
47206 109480

5.5.17 17th Energy Level

Not Available
Rank: N/A (Overall)
Cobalt
52737 122200

5.5.18 18th Energy Level

Not Available
Rank: N/A (Overall)
Nickel
58570 134810

5.5.19 19th Energy Level

Not Available
Rank: N/A (Overall)
Copper
64702 148700

5.5.20 20th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
80400 171200

5.5.21 21st Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
87000 179100

5.5.22 22nd Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
93400 184900

5.5.23 23rd Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
98420 198800

5.5.24 24th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
104400 195200

5.5.25 25th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
121900 121900

5.5.26 26th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
127700 127700

5.5.27 27th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
133800 133800

5.5.28 28th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
139800 139800

5.5.29 29th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
148100 148100

5.5.30 30th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum
154500 154500

5.6 Electrochemical Equivalent

1.87 g/amp-hr
Rank: 34 (Overall)
Beryllium
0.16812 8.3209

5.7 Electron Work Function

2.70 eV
Rank: 41 (Overall)
Cesium
2.14 5.65

5.8 Other Chemical Properties

Ionization, Radioactive Isotopes

6 Atomic

6.1 Atomic Number

62
Rank: 54 (Overall)
Lithium
3 117

6.2 Electron Configuration

[Xe] 4f6 6s2

6.3 Crystal Structure

Rhombohedral (RHO)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

62
Rank: 53 (Overall)
Lithium
3 117

6.4.2 Number of Neutrons

88
Rank: 39 (Overall)
Lithium
4 184

6.4.3 Number of Electrons

62
Rank: 53 (Overall)
Lithium
3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

180.00 pm
Rank: 14 (Overall)
Beryllium
112 265

6.5.2 Covalent Radius

198.00 pm
Rank: 13 (Overall)
Beryllium
96 260

6.5.3 Van der Waals Radius

229.00 pm
Rank: 20 (Overall)
Zinc
139 348

6.6 Atomic Weight

150.36 amu
Rank: 48 (Overall)
Lithium
6.94 294

6.7 Atomic Volume

19.95 cm3/mol
Rank: 19 (Overall)
Manganese
1.39 71.07

6.8 Adjacent Atomic Numbers

6.8.1 Previous Element

6.8.2 Next Element

6.9 Valence Electron Potential

44.80 (-eV)
Rank: 37 (Overall)
Francium
8 392.42

6.10 Lattice Constant

362.10 pm
Rank: 33 (Overall)
Beryllium
228.58 891.25

6.11 Lattice Angles

π/2, π/2, 2 π/3

6.12 Lattice C/A Ratio

Not Available
Rank: N/A (Overall)
Beryllium
1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

7.52 g/cm3
Rank: 53 (Overall)
Lithium
0.534 40.7

7.1.2 Density When Liquid (at m.p.)

7.16 g/cm3
Rank: 32 (Overall)
Lithium
0.512 20

7.2 Tensile Strength

Not Available
Rank: N/A (Overall)
Indium
2.5 11000

7.3 Viscosity

Not Available
Rank: N/A (Overall)
Mercury
0.001526 0.001526

7.4 Vapor Pressure

7.4.1 Vapor Pressure at 1000 K

0.94 (Pa)
Rank: 9 (Overall)
Cerium
2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

Not Available
Rank: N/A (Overall)
Tungsten
2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

19.50 GPa
Rank: 34 (Overall)
Potassium
1.3 222

7.5.2 Bulk Modulus

37.80 GPa
Rank: 35 (Overall)
Cesium
1.6 462

7.5.3 Young's Modulus

49.70 GPa
Rank: 37 (Overall)
Cesium
1.7 528

7.6 Poisson Ratio

0.27
Rank: 19 (Overall)
Beryllium
0.032 0.47

7.7 Other Mechanical Properties

NA

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

7.52
Rank: 41 (Overall)
Lithium
0.53 4500

8.1.2 Magnetic Ordering

Paramagnetic

8.1.3 Permeability

Not Available
Rank: N/A (Overall)
Bismuth
1.25643E-06 0.0063

8.1.4 Susceptibility

Not Available
Rank: N/A (Overall)
Bismuth
-0.000166 200000

8.2 Electrical Properties

8.2.1 Electrical Property

Conductor

8.2.2 Resistivity

0.94 nΩ·m
Rank: 61 (Overall)
Thallium
0.18 961

8.2.3 Electrical Conductivity

0.01 106/cm Ω
Rank: 58 (Overall)
Plutonium
0.00666 0.63

8.2.4 Electron Affinity

50.00 kJ/mol
Rank: 21 (Overall)
Mercury
0 222.8

9 Thermal

9.1 Specific Heat

0.20 J/(kg K)
Rank: 31 (Overall)
Americium
0.11 3.6

9.2 Molar Heat Capacity

29.54 J/mol·K
Rank: 7 (Overall)
Beryllium
16.443 62.7

9.3 Thermal Conductivity

13.30 W/m·K
Rank: 58 (Overall)
Neptunium
6.3 429

9.4 Critical Temperature

Not Available
Rank: N/A (Overall)
Ytterbium
26.3 3223

9.5 Thermal Expansion

12.70 µm/(m·K)
Rank: 30 (Overall)
Tungsten
4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

166.40 kJ/mol
Rank: 44 (Overall)
Zinc
7.32 799.1

9.6.2 Enthalpy of Fusion

8.62 kJ/mol
Rank: 40 (Overall)
Cesium
2.1 35.23

9.6.3 Enthalpy of Atomization

209.00 kJ/mol
Rank: 43 (Overall)
Mercury
61.5 837

9.7 Standard Molar Entropy

69.60 J/mol.K
Rank: 15 (Overall)
Beryllium
9.5 198.1