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Cobalt
Cobalt

Rubidium
Rubidium



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Cobalt
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Rubidium

Cobalt Rubidium Comparison

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1 Periodic Table
1.1 Symbol
Co
Rb
1.2 Group Number
Tennessine Metal
9
Rank: 9 (Overall)
1
Rank: 17 (Overall)
Gadolinium Metal
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1.3 Period Number
Uranium Metal
4
Rank: 4 (Overall)
5
Rank: 3 (Overall)
Lithium Metal
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1.4 Block
d block
s block
1.5 Element Family
Transition Metal
Alkali
1.6 CAS Number
Roentgenium Met..
7440484
Rank: 38 (Overall)
7440177
Rank: 62 (Overall)
Aluminium Metal
1.7 Space Group Name
P63/mmc
Im_ 3m
1.8 Space Group Number
Sodium Metal
194.00
Rank: 5 (Overall)
229.00
Rank: 1 (Overall)
Plutonium Metal
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2 Facts
2.1 Interesting Facts
  • The main source of Cobalt is as a by-product of copper and nickel metal mining.
  • Cobalt metal can be obtained from other elements like Oxygen, Sulfur and Arsenic.
  • It s also used in electroplating process as it exhibits anti cession properties.
  • Rubidium metal is 16th most common element found in the earth crust.
  • Rubidium metal also found in minerals as well as seawater.
2.2 Sources
Found in Compounds, Mining, Ores of Minerals
Obtained from Lithium Production.
2.3 History
2.3.1 Who Discovered
Georg Brandt
Robert Bunsen and Gustav Kirchhoff
2.3.2 Discovery
In 1732
In 1861
2.4 Abundance
2.4.1 Abundance In Universe
Iron Metal
3 * 10-4 %
Rank: 9 (Overall)
1 * 10-6 %
Rank: 16 (Overall)
Thallium Metal
2.4.2 Abundance In Sun
Iron Metal
~0.0004 %
Rank: 9 (Overall)
~0.000003 %
Rank: 17 (Overall)
Beryllium Metal
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2.4.3 Abundance In Meteorites
Iron Metal
0.06 %
Rank: 10 (Overall)
0.00 %
Rank: 19 (Overall)
Gold Metal
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2.4.4 Abundance In Earth's Crust
Aluminium Metal
0.00 %
Rank: 21 (Overall)
0.01 %
Rank: 18 (Overall)
Radium Metal
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2.4.5 Abundance In Oceans
Sodium Metal
0.00 %
Rank: 20 (Overall)
0.00 %
Rank: 7 (Overall)
Protactinium Metal
2.4.6 Abundance In Humans
Calcium Metal
0.00 %
Rank: 17 (Overall)
0.00 %
Rank: 7 (Overall)
Radium Metal
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3 Uses
3.1 Uses & Benefits
  • Its alloys with aluminum and nickel are used to make powerful magnets.
  • Few other alloys exhibit high-temperature strength and hence they are used in Turbines of Jet and Gas engine.
  • Rubidium's main application is in the glass manufacturing.
  • Rubidium can very easily get ionized and hence it is used for ion engines, but it is still less efficient than that of Caesium.
3.1.1 Industrial Uses
Chemical Industry, Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
Pharmaceutical Industry
NA
3.1.3 Other Uses
Alloys
Alloys, Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Non Toxic
3.2.2 Present in Human Body
60% Transition Metals Metals have it !
83% Alkali Metals Metals have it !
3.2.3 In Blood
Sodium Metal
0.04 Blood/mg dm-3
Rank: 18 (Overall)
2.49 Blood/mg dm-3
Rank: 7 (Overall)
Plutonium Metal
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3.2.4 In Bone
Calcium Metal
0.04 p.p.m.
Rank: 27 (Overall)
5.00 p.p.m.
Rank: 13 (Overall)
Plutonium Metal
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4 Physical
4.1 Melting Point
Tungsten Metal
1,495.00 °C
Rank: 29 (Overall)
38.89 °C
Rank: 78 (Overall)
Francium Metal
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4.2 Boiling Point
Tungsten Metal
2,870.00 °C
Rank: 34 (Overall)
688.00 °C
Rank: 74 (Overall)
Flerovium Metal
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Gray
Grayish White
4.3.3 Luster
Metallic
NA
4.4 Hardness
4.4.1 Mohs Hardness
Chromium Metal
5.00
Rank: 8 (Overall)
0.30
Rank: 24 (Overall)
Cesium Metal
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4.4.2 Brinell Hardness
Osmium Metal
470.00 MPa
Rank: 26 (Overall)
0.22 MPa
Rank: 55 (Overall)
Cesium Metal
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4.4.3 Vickers Hardness
Tungsten Metal
1,043.00 MPa
Rank: 11 (Overall)
Not Available
Rank: N/A (Overall)
Palladium Metal
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4.5 Speed of Sound
Technetium Metal
4,720.00 m/s
Rank: 14 (Overall)
1,300.00 m/s
Rank: 50 (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
67.00 %
Rank: 11 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
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4.7 Allotropes
6% Transition Metals Metals have it !
No Alkali Metals Metals has it !
4.7.1 α Allotropes
α-Cobalt
Not Available
4.7.2 β Allotropes
β-Cobalt
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Co
Rb
5.2 Isotopes
5.2.1 Known Isotopes
Palladium Metal
26
Rank: 13 (Overall)
29
Rank: 10 (Overall)
Tennessine Metal
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold Metal
1.88
Rank: 12 (Overall)
0.82
Rank: 51 (Overall)
Francium Metal
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5.3.2 Sanderson Electronegativity
Cobalt Metal
2.56
Rank: 1 (Overall)
0.31
Rank: 32 (Overall)
Cesium Metal
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5.3.3 Allred Rochow Electronegativity
Gallium Metal
1.70
Rank: 5 (Overall)
0.89
Rank: 40 (Overall)
Cesium Metal
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5.3.4 Mulliken-Jaffe Electronegativity
Polonium Metal
Not Available
Rank: N/A (Overall)
0.69
Rank: 24 (Overall)
Cesium Metal
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5.3.5 Allen Electronegativity
Berkelium Metal
1.84
Rank: 10 (Overall)
0.71
Rank: 46 (Overall)
Cesium Metal
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5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium Metal
2.12
Rank: 41 (Overall)
3.18
Rank: 3 (Overall)
Gold Metal
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5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium Metal
760.40 kJ/mol
Rank: 19 (Overall)
403.00 kJ/mol
Rank: 88 (Overall)
Cesium Metal
5.5.2 2nd Energy Level
Chromium Metal
1,648.00 kJ/mol
Rank: 31 (Overall)
2,633.00 kJ/mol
Rank: 6 (Overall)
Ruthenium Metal
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5.5.3 3rd Energy Level
Chromium Metal
3,232.00 kJ/mol
Rank: 22 (Overall)
3,860.00 kJ/mol
Rank: 11 (Overall)
Osmium Metal
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5.5.4 4th Energy Level
Chromium Metal
4,950.00 kJ/mol
Rank: 19 (Overall)
5,080.00 kJ/mol
Rank: 18 (Overall)
Thorium Metal
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5.5.5 5th Energy Level
Chromium Metal
7,670.00 kJ/mol
Rank: 12 (Overall)
6,850.00 kJ/mol
Rank: 19 (Overall)
Dubnium Metal
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5.5.6 6th Energy Level
Chromium Metal
9,840.00 kJ/mol
Rank: 12 (Overall)
8,140.00 kJ/mol
Rank: 20 (Overall)
Seaborgium Metal
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5.5.7 7th Energy level
Chromium Metal
12,440.00 kJ/mol
Rank: 11 (Overall)
9,570.00 kJ/mol
Rank: 20 (Overall)
Bohrium Metal
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5.5.8 8th Energy Level
Chromium Metal
15,230.00 kJ/mol
Rank: 12 (Overall)
13,120.00 kJ/mol
Rank: 17 (Overall)
Hassium Metal
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5.5.9 9th Energy Level
Chromium Metal
17,959.00 kJ/mol
Rank: 13 (Overall)
14,500.00 kJ/mol
Rank: 18 (Overall)
Yttrium Metal
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5.5.10 10th Energy Level
Chromium Metal
26,570.00 kJ/mol
Rank: 7 (Overall)
26,740.00 kJ/mol
Rank: 6 (Overall)
Strontium Metal
5.5.11 11th Energy Level
Magnesium Metal
29,400.00 kJ/mol
Rank: 8 (Overall)
Not Available
Rank: N/A (Overall)
Yttrium Metal
5.5.12 12th Energy Level
Magnesium Metal
32,400.00 kJ/mol
Rank: 8 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.13 13th Energy Level
Titanium Metal
36,600.00 kJ/mol
Rank: 8 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.14 14th Energy Level
Vanadium Metal
39,700.00 kJ/mol
Rank: 9 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.15 15th Energy Level
Chromium Metal
42,800.00 kJ/mol
Rank: 12 (Overall)
Not Available
Rank: N/A (Overall)
Manganese Metal
5.5.16 16th Energy Level
Manganese Metal
49,396.00 kJ/mol
Rank: 11 (Overall)
Not Available
Rank: N/A (Overall)
Iron Metal
5.5.17 17th Energy Level
Iron Metal
52,737.00 kJ/mol
Rank: 13 (Overall)
Not Available
Rank: N/A (Overall)
Cobalt Metal
5.5.18 18th Energy Level
Cobalt Metal
134,810.00 kJ/mol
Rank: 1 (Overall)
Not Available
Rank: N/A (Overall)
Nickel Metal
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5.5.19 19th Energy Level
Nickel Metal
145,170.00 kJ/mol
Rank: 2 (Overall)
Not Available
Rank: N/A (Overall)
Copper Metal
5.5.20 20th Energy Level
Zinc Metal
154,700.00 kJ/mol
Rank: 4 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.21 21st Energy Level
Zinc Metal
167,400.00 kJ/mol
Rank: 4 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.22 22nd Energy Level
Copper Metal
178,100.00 kJ/mol
Rank: 3 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.23 23rd Energy Level
Copper Metal
189,300.00 kJ/mol
Rank: 3 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.24 24th Energy Level
Iron Metal
Not Available
Rank: 100 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
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5.5.25 25th Energy Level
Molybdenum Metal
Not Available
Rank: 100 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.26 26th Energy Level
Molybdenum Metal
Not Available
Rank: 100 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.27 27th Energy Level
Molybdenum Metal
Not Available
Rank: 100 (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
1.10 g/amp-hr
Rank: 57 (Overall)
3.19 g/amp-hr
Rank: 14 (Overall)
Beryllium Metal
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5.7 Electron Work Function
Platinum Metal
5.00 eV
Rank: 5 (Overall)
2.16 eV
Rank: 45 (Overall)
Cesium Metal
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5.8 Other Chemical Properties
Chemical Stability, Ionization
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
Tennessine Metal
22
Rank: 84 (Overall)
37
Rank: 75 (Overall)
Lithium Metal
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6.2 Electron Configuration
[Ar] 3d2 4s2
[Kr] 5s1
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine Metal
22
Rank: 83 (Overall)
37
Rank: 74 (Overall)
Lithium Metal
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6.4.2 Number of Neutrons
Flerovium Metal
26
Rank: 62 (Overall)
48
Rank: 56 (Overall)
Lithium Metal
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6.4.3 Number of Electrons
Tennessine Metal
22
Rank: 83 (Overall)
37
Rank: 74 (Overall)
Lithium Metal
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6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium Metal
147.00 pm
Rank: 34 (Overall)
248.00 pm
Rank: 2 (Overall)
Beryllium Metal
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6.5.2 Covalent Radius
Francium Metal
160.00 pm
Rank: 30 (Overall)
220.00 pm
Rank: 4 (Overall)
Beryllium Metal
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6.5.3 Van der Waals Radius
Francium Metal
200.00 pm
Rank: 28 (Overall)
303.00 pm
Rank: 3 (Overall)
Zinc Metal
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6.6 Atomic Weight
Tennessine Metal
47.87 amu
Rank: 78 (Overall)
85.47 amu
Rank: 69 (Overall)
Lithium Metal
6.7 Atomic Volume
Cesium Metal
10.64 cm3/mol
Rank: 46 (Overall)
55.90 cm3/mol
Rank: 2 (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
95.20 (-eV)
Rank: 10 (Overall)
9.47 (-eV)
Rank: 65 (Overall)
Francium Metal
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6.10 Lattice Constant
Manganese Metal
295.08 pm
Rank: 61 (Overall)
558.50 pm
Rank: 10 (Overall)
Beryllium Metal
6.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
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
4.51 g/cm3
Rank: 70 (Overall)
1.53 g/cm3
Rank: 81 (Overall)
Lithium Metal
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7.1.2 Density When Liquid (at m.p.)
Osmium Metal
4.11 g/cm3
Rank: 49 (Overall)
1.46 g/cm3
Rank: 56 (Overall)
Lithium Metal
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7.2 Tensile Strength
Iron Metal
434.00 MPa
Rank: 9 (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)
Not Available
Rank: N/A (Overall)
Cerium Metal
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7.4.2 Vapor Pressure at 2000 K
Chromium Metal
0.98 (Pa)
Rank: 14 (Overall)
Not Available
Rank: N/A (Overall)
Tungsten Metal
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7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium Metal
44.00 GPa
Rank: 17 (Overall)
Not Available
Rank: N/A (Overall)
Potassium Metal
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7.5.2 Bulk Modulus
Osmium Metal
110.00 GPa
Rank: 15 (Overall)
2.50 GPa
Rank: 49 (Overall)
Cesium Metal
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7.5.3 Young's Modulus
Iridium Metal
116.00 GPa
Rank: 18 (Overall)
2.40 GPa
Rank: 57 (Overall)
Cesium Metal
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7.6 Poisson Ratio
Gallium Metal
0.32
Rank: 12 (Overall)
Not Available
Rank: N/A (Overall)
Beryllium Metal
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7.7 Other Mechanical Properties
Ductile
Ductile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt Metal
4,500.00
Rank: 1 (Overall)
1.53
Rank: 67 (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
Poor Conductor
Conductor
8.2.2 Resistivity
Mercury Metal
420.00 nΩ·m
Rank: 12 (Overall)
128.00 nΩ·m
Rank: 26 (Overall)
Thallium Metal
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8.2.3 Electrical Conductivity
Silver Metal
0.02 106/cm Ω
Rank: 42 (Overall)
0.08 106/cm Ω
Rank: 24 (Overall)
Plutonium Metal
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8.2.4 Electron Affinity
Gold Metal
7.60 kJ/mol
Rank: 37 (Overall)
46.90 kJ/mol
Rank: 24 (Overall)
Mercury Metal
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9 Thermal
9.1 Specific Heat
Lithium Metal
0.52 J/(kg K)
Rank: 9 (Overall)
0.36 J/(kg K)
Rank: 17 (Overall)
Americium Metal
9.2 Molar Heat Capacity
Americium Metal
25.06 J/mol·K
Rank: 44 (Overall)
31.06 J/mol·K
Rank: 5 (Overall)
Beryllium Metal
9.3 Thermal Conductivity
Silver Metal
21.90 W/m·K
Rank: 43 (Overall)
58.20 W/m·K
Rank: 26 (Overall)
Neptunium Metal
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9.4 Critical Temperature
Lithium Metal
Not Available
Rank: N/A (Overall)
2,093.00 K
Rank: 4 (Overall)
Ytterbium Metal
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9.5 Thermal Expansion
Cesium Metal
8.60 µm/(m·K)
Rank: 45 (Overall)
90.00 µm/(m·K)
Rank: 2 (Overall)
Tungsten Metal
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9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten Metal
429.00 kJ/mol
Rank: 15 (Overall)
69.20 kJ/mol
Rank: 56 (Overall)
Zinc Metal
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9.6.2 Enthalpy of Fusion
Tungsten Metal
15.48 kJ/mol
Rank: 19 (Overall)
2.19 kJ/mol
Rank: 62 (Overall)
Cesium Metal
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9.6.3 Enthalpy of Atomization
Tungsten Metal
468.60 kJ/mol
Rank: 15 (Overall)
82.00 kJ/mol
Rank: 59 (Overall)
Mercury Metal
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9.7 Standard Molar Entropy
Protactinium Me..
27.30 J/mol.K
Rank: 56 (Overall)
76.80 J/mol.K
Rank: 5 (Overall)
Beryllium Metal
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