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Promethium
Promethium

Samarium
Samarium



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Promethium
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Samarium

Promethium Samarium Comparison

1 Periodic Table
1.1 Symbol
Pm
Sm
1.2 Group Number
Tennessine Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Gadolinium Metal
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1.3 Period Number
Uranium Metal
6
Rank: 2 (Overall)
6
Rank: 2 (Overall)
Lithium Metal
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1.4 Block
f block
f block
1.5 Element Family
Lanthanide
Lanthanide
1.6 CAS Number
Roentgenium Met..
7440122
Rank: 67 (Overall)
7440199
Rank: 60 (Overall)
Aluminium Metal
1.7 Space Group Name
Not Available
R_ 3m
1.8 Space Group Number
Sodium Metal
Not Available
Rank: N/A (Overall)
166.00
Rank: 6 (Overall)
Plutonium Metal
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2 Facts
2.1 Interesting Facts
  • Promethium metal found in Pitchblende.
  • Promethium metal is highly radioactive metal.
  • 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
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Lecoq de Boisbaudran
2.3.2 Discovery
In 1942
In 1879
2.4 Abundance
2.4.1 Abundance In Universe
Iron Metal
Not Available
Rank: N/A (Overall)
5 * 10-7 %
Rank: 19 (Overall)
Thallium Metal
2.4.2 Abundance In Sun
Iron Metal
~-9999 %
Rank: N/A (Overall)
~0.0000001 %
Rank: 26 (Overall)
Beryllium Metal
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2.4.3 Abundance In Meteorites
Iron Metal
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 37 (Overall)
Gold Metal
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2.4.4 Abundance In Earth's Crust
Aluminium Metal
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 29 (Overall)
Radium Metal
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2.4.5 Abundance In Oceans
Sodium Metal
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 40 (Overall)
Protactinium Metal
2.4.6 Abundance In Humans
Calcium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Radium Metal
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3 Uses
3.1 Uses & Benefits
  • It is used for research purpose. Very small amount of this metal is used in atomic batteries.
  • Its radioactive decay is used for a phosphor to give off light. The light emitted is converted into electricity.
  • 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
NA
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
NA
Alloys, In Nuclear Reactors
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
Slightly Toxic
3.2.2 Present in Human Body
27% Lanthanide Series Metals have it !
27% Lanthanide Series Metals have it !
3.2.3 In Blood
Sodium Metal
0.00 Blood/mg dm-3
Rank: 37 (Overall)
0.01 Blood/mg dm-3
Rank: 22 (Overall)
Plutonium Metal
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3.2.4 In Bone
Calcium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Plutonium Metal
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4 Physical
4.1 Melting Point
Tungsten Metal
1,042.00 °C
Rank: 43 (Overall)
1,072.00 °C
Rank: 41 (Overall)
Francium Metal
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4.2 Boiling Point
Tungsten Metal
3,000.00 °C
Rank: 31 (Overall)
1,900.00 °C
Rank: 52 (Overall)
Flerovium Metal
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Unknown
Silvery White
4.3.3 Luster
Metallic
Lustrous
4.4 Hardness
4.4.1 Mohs Hardness
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium Metal
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4.4.2 Brinell Hardness
Osmium Metal
Not Available
Rank: N/A (Overall)
441.00 MPa
Rank: 27 (Overall)
Cesium Metal
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4.4.3 Vickers Hardness
Tungsten Metal
Not Available
Rank: N/A (Overall)
412.00 MPa
Rank: 24 (Overall)
Palladium Metal
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4.5 Speed of Sound
Technetium Metal
Not Available
Rank: N/A (Overall)
2,130.00 m/s
Rank: 42 (Overall)
Thallium Metal
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4.6 Optical Properties
4.6.1 Refractive Index
Palladium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury Metal
4.6.2 Reflectivity
Silver Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
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4.7 Allotropes
No Lanthanide Series Metals has it !
No Lanthanide Series Metals has it !
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Pm
Sm
5.2 Isotopes
5.2.1 Known Isotopes
Palladium Metal
27
Rank: 12 (Overall)
30
Rank: 9 (Overall)
Tennessine Metal
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold Metal
Not Available
Rank: N/A (Overall)
1.17
Rank: 40 (Overall)
Francium Metal
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5.3.2 Sanderson Electronegativity
Cobalt Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium Metal
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5.3.3 Allred Rochow Electronegativity
Gallium Metal
1.07
Rank: 32 (Overall)
1.07
Rank: 32 (Overall)
Cesium Metal
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5.3.4 Mulliken-Jaffe Electronegativity
Polonium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium Metal
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5.3.5 Allen Electronegativity
Berkelium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium Metal
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5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium Metal
Not Available
Rank: N/A (Overall)
2.83
Rank: 14 (Overall)
Gold Metal
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5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium Metal
540.00 kJ/mol
Rank: 73 (Overall)
544.50 kJ/mol
Rank: 72 (Overall)
Cesium Metal
5.5.2 2nd Energy Level
Chromium Metal
1,050.00 kJ/mol
Rank: 78 (Overall)
1,070.00 kJ/mol
Rank: 75 (Overall)
Ruthenium Metal
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5.5.3 3rd Energy Level
Chromium Metal
2,150.00 kJ/mol
Rank: 67 (Overall)
2,260.00 kJ/mol
Rank: 59 (Overall)
Osmium Metal
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5.5.4 4th Energy Level
Chromium Metal
3,970.00 kJ/mol
Rank: 38 (Overall)
3,990.00 kJ/mol
Rank: 37 (Overall)
Thorium Metal
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5.5.5 5th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Dubnium Metal
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5.5.6 6th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Seaborgium Metal
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5.5.7 7th Energy level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bohrium Metal
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5.5.8 8th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Hassium Metal
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5.5.9 9th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Yttrium Metal
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5.5.10 10th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Strontium Metal
5.5.11 11th Energy Level
Magnesium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Yttrium Metal
5.5.12 12th Energy Level
Magnesium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.13 13th Energy Level
Titanium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.14 14th Energy Level
Vanadium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.15 15th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Manganese Metal
5.5.16 16th Energy Level
Manganese Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Iron Metal
5.5.17 17th Energy Level
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cobalt Metal
5.5.18 18th Energy Level
Cobalt Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Nickel Metal
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5.5.19 19th Energy Level
Nickel Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Copper Metal
5.5.20 20th Energy Level
Zinc Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.21 21st Energy Level
Zinc Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.22 22nd Energy Level
Copper Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.23 23rd Energy Level
Copper Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.24 24th Energy Level
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
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5.5.25 25th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.26 26th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.27 27th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.28 28th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.29 29th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.30 30th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.6 Electrochemical Equivalent
Francium Metal
1.80 g/amp-hr
Rank: 36 (Overall)
1.87 g/amp-hr
Rank: 34 (Overall)
Beryllium Metal
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5.7 Electron Work Function
Platinum Metal
Not Available
Rank: N/A (Overall)
2.70 eV
Rank: 41 (Overall)
Cesium Metal
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5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes
6 Atomic
6.1 Atomic Number
Tennessine Metal
61
Rank: 55 (Overall)
62
Rank: 54 (Overall)
Lithium Metal
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6.2 Electron Configuration
[Xe] 4f5 6s2
[Xe] 4f6 6s2
6.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Rhombohedral (RHO)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine Metal
61
Rank: 54 (Overall)
62
Rank: 53 (Overall)
Lithium Metal
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6.4.2 Number of Neutrons
Flerovium Metal
84
Rank: 40 (Overall)
88
Rank: 39 (Overall)
Lithium Metal
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6.4.3 Number of Electrons
Tennessine Metal
61
Rank: 54 (Overall)
62
Rank: 53 (Overall)
Lithium Metal
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6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium Metal
183.00 pm
Rank: 10 (Overall)
180.00 pm
Rank: 14 (Overall)
Beryllium Metal
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6.5.2 Covalent Radius
Francium Metal
199.00 pm
Rank: 12 (Overall)
198.00 pm
Rank: 13 (Overall)
Beryllium Metal
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6.5.3 Van der Waals Radius
Francium Metal
236.00 pm
Rank: 16 (Overall)
229.00 pm
Rank: 20 (Overall)
Zinc Metal
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6.6 Atomic Weight
Tennessine Metal
145.00 amu
Rank: 49 (Overall)
150.36 amu
Rank: 48 (Overall)
Lithium Metal
6.7 Atomic Volume
Cesium Metal
22.39 cm3/mol
Rank: 12 (Overall)
19.95 cm3/mol
Rank: 19 (Overall)
Manganese Metal
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
Platinum Metal
44.10 (-eV)
Rank: 39 (Overall)
44.80 (-eV)
Rank: 37 (Overall)
Francium Metal
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6.10 Lattice Constant
Manganese Metal
Not Available
Rank: N/A (Overall)
362.10 pm
Rank: 33 (Overall)
Beryllium Metal
6.11 Lattice Angles
Unknown
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
Cadmium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium Metal
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
Hassium Metal
7.26 g/cm3
Rank: 56 (Overall)
7.52 g/cm3
Rank: 53 (Overall)
Lithium Metal
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7.1.2 Density When Liquid (at m.p.)
Osmium Metal
Not Available
Rank: N/A (Overall)
7.16 g/cm3
Rank: 32 (Overall)
Lithium Metal
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7.2 Tensile Strength
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Indium Metal
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7.3 Viscosity
Mercury Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury Metal
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
Strontium Metal
Not Available
Rank: N/A (Overall)
0.94 (Pa)
Rank: 9 (Overall)
Cerium Metal
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7.4.2 Vapor Pressure at 2000 K
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Tungsten Metal
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7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium Metal
18.00 GPa
Rank: 36 (Overall)
19.50 GPa
Rank: 34 (Overall)
Potassium Metal
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7.5.2 Bulk Modulus
Osmium Metal
33.00 GPa
Rank: 36 (Overall)
37.80 GPa
Rank: 35 (Overall)
Cesium Metal
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7.5.3 Young's Modulus
Iridium Metal
46.00 GPa
Rank: 38 (Overall)
49.70 GPa
Rank: 37 (Overall)
Cesium Metal
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7.6 Poisson Ratio
Gallium Metal
0.28
Rank: 17 (Overall)
0.27
Rank: 19 (Overall)
Beryllium Metal
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7.7 Other Mechanical Properties
NA
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt Metal
7.26
Rank: 43 (Overall)
7.52
Rank: 41 (Overall)
Lithium Metal
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8.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
8.1.3 Permeability
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth Metal
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8.1.4 Susceptibility
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth Metal
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8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Conductor
8.2.2 Resistivity
Mercury Metal
0.75 nΩ·m
Rank: 64 (Overall)
0.94 nΩ·m
Rank: 61 (Overall)
Thallium Metal
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8.2.3 Electrical Conductivity
Silver Metal
Not Available
Rank: N/A (Overall)
0.01 106/cm Ω
Rank: 58 (Overall)
Plutonium Metal
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8.2.4 Electron Affinity
Gold Metal
50.00 kJ/mol
Rank: 21 (Overall)
50.00 kJ/mol
Rank: 21 (Overall)
Mercury Metal
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9 Thermal
9.1 Specific Heat
Lithium Metal
0.18 J/(kg K)
Rank: 33 (Overall)
0.20 J/(kg K)
Rank: 31 (Overall)
Americium Metal
9.2 Molar Heat Capacity
Americium Metal
Not Available
Rank: N/A (Overall)
29.54 J/mol·K
Rank: 7 (Overall)
Beryllium Metal
9.3 Thermal Conductivity
Silver Metal
17.90 W/m·K
Rank: 47 (Overall)
13.30 W/m·K
Rank: 58 (Overall)
Neptunium Metal
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9.4 Critical Temperature
Lithium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium Metal
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9.5 Thermal Expansion
Cesium Metal
9.00 µm/(m·K)
Rank: 43 (Overall)
12.70 µm/(m·K)
Rank: 30 (Overall)
Tungsten Metal
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9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten Metal
Not Available
Rank: N/A (Overall)
166.40 kJ/mol
Rank: 44 (Overall)
Zinc Metal
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9.6.2 Enthalpy of Fusion
Tungsten Metal
7.50 kJ/mol
Rank: 43 (Overall)
8.62 kJ/mol
Rank: 40 (Overall)
Cesium Metal
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9.6.3 Enthalpy of Atomization
Tungsten Metal
310.00 kJ/mol
Rank: 34 (Overall)
209.00 kJ/mol
Rank: 43 (Overall)
Mercury Metal
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9.7 Standard Molar Entropy
Protactinium Me..
Not Available
Rank: N/A (Overall)
69.60 J/mol.K
Rank: 15 (Overall)
Beryllium Metal
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