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Fermium
Fermium

Berkelium
Berkelium



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Fermium
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Berkelium

Fermium vs Berkelium

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1 Periodic Table
1.1 Symbol
Fm
Bk
1.2 Group Number
Tennessine
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Gadolinium
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1.3 Period Number
Uranium
7
Rank: 1 (Overall)
7
Rank: 1 (Overall)
Lithium
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1.4 Block
f block
f block
1.5 Element Family
Actinide
Actinide
1.6 CAS Number
Roentgenium
7440724
Rank: 19 (Overall)
7440406
Rank: 44 (Overall)
Aluminium
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1.7 Space Group Name
Not Available
P63/mmc
1.8 Space Group Number
Sodium
Not Available
Rank: N/A (Overall)
194.00
Rank: 5 (Overall)
Plutonium
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2 Facts
2.1 Interesting Facts
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  • X-ray Diffraction- different compounds of Berkelium metals are identified using it.
    Commercial uses of Berkelium metal are not yet discovered.
2.2 Sources
Bombarding Pu-239 with Neutrons
Bombarding Americium with Alpha Particles.
2.3 History
2.3.1 Who Discovered
Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory
2.3.2 Discovery
In 1952
In 1949
2.4 Abundance
2.4.1 Abundance In Universe
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Thallium
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2.4.2 Abundance In Sun
Iron
~-9999 %
Rank: N/A (Overall)
~-9999 %
Rank: N/A (Overall)
Beryllium
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2.4.3 Abundance In Meteorites
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Gold
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2.4.4 Abundance In Earth's Crust
Aluminium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Radium
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2.4.5 Abundance In Oceans
Sodium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Protactinium
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2.4.6 Abundance In Humans
Calcium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Radium
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3 Uses
3.1 Uses & Benefits
  • Currently known uses of Fermium metal are limited to research purpose only.
  • This metal is very rare and has no commercial uses.
3.1.1 Industrial Uses
NA
NA
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
NA
NA
3.2 Biological Properties
3.2.1 Toxicity
Unknown
Unknown
3.2.2 Present in Human Body
7% Actinide Series Metals have it !
7% Actinide Series Metals have it !
3.2.3 In Blood
Sodium
0.00 Blood/mg dm-3
Rank: 37 (Overall)
0.00 Blood/mg dm-3
Rank: 37 (Overall)
Plutonium
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3.2.4 In Bone
Calcium
0.00 p.p.m.
Rank: 36 (Overall)
0.00 p.p.m.
Rank: 36 (Overall)
Plutonium
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4 Physical
4.1 Melting Point
Tungsten
1,527.00 °C
Rank: 26 (Overall)
986.00 °C
Rank: 46 (Overall)
Francium
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4.2 Boiling Point
Tungsten
Not Available
Rank: N/A (Overall)
2,627.00 °C
Rank: 40 (Overall)
Flerovium
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Unknown
Silver
4.3.3 Luster
Not Defined
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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4.4.2 Brinell Hardness
Osmium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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4.4.3 Vickers Hardness
Tungsten
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Palladium
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4.5 Speed of Sound
Technetium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Thallium
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4.6 Optical Properties
4.6.1 Refractive Index
Palladium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
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4.6.2 Reflectivity
Silver
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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4.7 Allotropes
No Actinide Series Metals has it !
No Actinide 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
Fm
Bk
5.2 Isotopes
5.2.1 Known Isotopes
Palladium
18
Rank: 21 (Overall)
14
Rank: 25 (Overall)
Tennessine
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold
1.30
Rank: 32 (Overall)
1.30
Rank: 32 (Overall)
Francium
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5.3.2 Sanderson Electronegativity
Cobalt
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.3.3 Allred Rochow Electronegativity
Gallium
1.20
Rank: 27 (Overall)
1.20
Rank: 27 (Overall)
Cesium
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5.3.4 Mulliken-Jaffe Electronegativity
Polonium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.3.5 Allen Electronegativity
Berkelium
Not Available
Rank: N/A (Overall)
2.70
Rank: 1 (Overall)
Cesium
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5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium
2.70
Rank: 22 (Overall)
2.70
Rank: 22 (Overall)
Gold
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5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium
627.00 kJ/mol
Rank: 47 (Overall)
601.00 kJ/mol
Rank: 52 (Overall)
Cesium
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5.5.2 2nd Energy Level
Chromium
1,225.00 kJ/mol
Rank: 58 (Overall)
1,186.00 kJ/mol
Rank: 62 (Overall)
Ruthenium
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5.5.3 3rd Energy Level
Chromium
2,363.00 kJ/mol
Rank: 54 (Overall)
2,152.00 kJ/mol
Rank: 66 (Overall)
Osmium
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5.5.4 4th Energy Level
Chromium
3,792.00 kJ/mol
Rank: 46 (Overall)
3,434.00 kJ/mol
Rank: 57 (Overall)
Thorium
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5.5.5 5th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Dubnium
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5.5.6 6th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Seaborgium
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5.5.7 7th Energy level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bohrium
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5.5.8 8th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Hassium
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5.5.9 9th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Yttrium
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5.5.10 10th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Strontium
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5.5.11 11th Energy Level
Magnesium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Yttrium
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5.5.12 12th Energy Level
Magnesium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.13 13th Energy Level
Titanium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.14 14th Energy Level
Vanadium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.15 15th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Manganese
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5.5.16 16th Energy Level
Manganese
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Iron
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5.5.17 17th Energy Level
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cobalt
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5.5.18 18th Energy Level
Cobalt
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Nickel
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5.5.19 19th Energy Level
Nickel
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Copper
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5.5.20 20th Energy Level
Zinc
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.21 21st Energy Level
Zinc
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.22 22nd Energy Level
Copper
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.23 23rd Energy Level
Copper
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.24 24th Energy Level
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.25 25th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.26 26th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.27 27th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.28 28th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.29 29th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.30 30th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.6 Electrochemical Equivalent
Francium
3.20 g/amp-hr
Rank: 13 (Overall)
3.07 g/amp-hr
Rank: 16 (Overall)
Beryllium
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5.7 Electron Work Function
Platinum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
Tennessine
100
Rank: 18 (Overall)
97
Rank: 21 (Overall)
Lithium
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1.1 Electron Configuration
[Rn] 5f12 7s2
[Rn] 5f9 7s2
1.3 Crystal Structure
Not Known
Double Hexagonal Close Packed (DHCP)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
Tennessine
100
Rank: 18 (Overall)
97
Rank: 21 (Overall)
Lithium
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1.4.2 Number of Neutrons
Flerovium
157
Rank: 7 (Overall)
150
Rank: 11 (Overall)
Lithium
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1.5.1 Number of Electrons
Tennessine
100
Rank: 18 (Overall)
97
Rank: 21 (Overall)
Lithium
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1.7 Radius of an Atom
1.7.1 Atomic Radius
Cesium
Not Available
Rank: N/A (Overall)
170.00 pm
Rank: 22 (Overall)
Beryllium
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1.7.3 Covalent Radius
Francium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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1.7.4 Van der Waals Radius
Francium
245.00 pm
Rank: 9 (Overall)
Not Available
Rank: N/A (Overall)
Zinc
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1.8 Atomic Weight
Tennessine
257.00 amu
Rank: 15 (Overall)
247.00 amu
Rank: 18 (Overall)
Lithium
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1.10 Atomic Volume
Cesium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Manganese
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1.11 Adjacent Atomic Numbers
1.11.1 Previous Element
1.11.2 Next Element
1.12 Valence Electron Potential
Platinum
Not Available
Rank: N/A (Overall)
45.50 (-eV)
Rank: 36 (Overall)
Francium
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1.14 Lattice Constant
Manganese
Not Available
Rank: N/A (Overall)
341.60 pm
Rank: 46 (Overall)
Beryllium
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2.3 Lattice Angles
NA
π/2, π/2, 2 π/3
2.4 Lattice C/A Ratio
Cadmium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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3 Mechanical
3.1 Density
3.1.2 Density At Room Temperature
Hassium
Not Available
Rank: N/A (Overall)
14.78 g/cm3
Rank: 22 (Overall)
Lithium
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3.1.3 Density When Liquid (at m.p.)
Osmium
Not Available
Rank: N/A (Overall)
13.25 g/cm3
Rank: 11 (Overall)
Lithium
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3.2 Tensile Strength
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Indium
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3.3 Viscosity
Mercury
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
3.4 Vapor Pressure
3.4.1 Vapor Pressure at 1000 K
Strontium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cerium
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3.4.3 Vapor Pressure at 2000 K
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Tungsten
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3.5 Elasticity properties
3.5.1 Shear Modulus
Osmium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Potassium
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3.6.2 Bulk Modulus
Osmium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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3.7.2 Young's Modulus
Iridium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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3.8 Poisson Ratio
Gallium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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3.9 Other Mechanical Properties
NA
NA
4 Magnetic
4.1 Magnetic Characteristics
4.1.1 Specific Gravity
Cobalt
Not Available
Rank: N/A (Overall)
14.00
Rank: 14 (Overall)
Lithium
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4.2.1 Magnetic Ordering
Unknown
Paramagnetic
4.2.2 Permeability
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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4.3.1 Susceptibility
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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4.4 Electrical Properties
4.4.1 Electrical Property
Unknown
Conductor
4.4.2 Resistivity
Mercury
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Thallium
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5.1.2 Electrical Conductivity
Silver
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Plutonium
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5.1.4 Electron Affinity
Gold
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
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6 Thermal
6.1 Specific Heat
Lithium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Americium
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6.2 Molar Heat Capacity
Americium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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6.3 Thermal Conductivity
Silver
Not Available
Rank: N/A (Overall)
10.00 W/m·K
Rank: 65 (Overall)
Neptunium
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6.5 Critical Temperature
Lithium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium
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6.7 Thermal Expansion
Cesium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Tungsten
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6.9 Enthalpy
6.9.1 Enthalpy of Vaporization
Tungsten
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Zinc
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6.9.3 Enthalpy of Fusion
Tungsten
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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6.9.5 Enthalpy of Atomization
Tungsten
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
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6.11 Standard Molar Entropy
Protactinium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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