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Rhodium
Rhodium

Cobalt
Cobalt



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Rhodium
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Cobalt

Rhodium Cobalt Comparison

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1 Periodic Table
1.1 Symbol
Rh
Co
1.2 Group Number
Tennessine Metal
9
Rank: 9 (Overall)
9
Rank: 9 (Overall)
Gadolinium Metal
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1.3 Period Number
Uranium Metal
5
Rank: 3 (Overall)
4
Rank: 4 (Overall)
Lithium Metal
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1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Transition Metal
1.6 CAS Number
Roentgenium Met..
7440166
Rank: 63 (Overall)
7440484
Rank: 38 (Overall)
Aluminium Metal
1.7 Space Group Name
Fm_ 3m
P63/mmc
1.8 Space Group Number
Sodium Metal
225.00
Rank: 2 (Overall)
194.00
Rank: 5 (Overall)
Plutonium Metal
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2 Facts
2.1 Interesting Facts
  • Rhodium is the rarest element out of all non-radioactive metals on the earth .
  • Rhodium is one of the most durable and hard metal, which also have high reflectance.
  • 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.
2.2 Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining
Found in Compounds, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
William Hyde Wollaston
Georg Brandt
2.3.2 Discovery
In 1804
In 1732
2.4 Abundance
2.4.1 Abundance In Universe
Iron Metal
6 * 10-8 %
Rank: 26 (Overall)
3 * 10-4 %
Rank: 9 (Overall)
Thallium Metal
1.1.1 Abundance In Sun
Iron Metal
~0.0000002 %
Rank: 25 (Overall)
~0.0004 %
Rank: 9 (Overall)
Beryllium Metal
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1.2.1 Abundance In Meteorites
Iron Metal
0.00 %
Rank: 36 (Overall)
0.06 %
Rank: 10 (Overall)
Gold Metal
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1.3.2 Abundance In Earth's Crust
Aluminium Metal
0.00 %
Rank: 55 (Overall)
0.00 %
Rank: 21 (Overall)
Radium Metal
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1.3.4 Abundance In Oceans
Sodium Metal
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 20 (Overall)
Protactinium Metal
1.3.5 Abundance In Humans
Calcium Metal
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 17 (Overall)
Radium Metal
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2 Uses
2.1 Uses & Benefits
  • Rhodium metal is mainly used in catalytic converters for cars as it reduces nitrogen oxides in exhaust gases.
  • It is used as an industrial catalyst for nitric acid, acetic acid, hydrogenation reaction, etc.
  • 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.
2.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
Chemical Industry, Electrical Industry, Electronic Industry
2.1.2 Medical Uses
NA
Pharmaceutical Industry
2.1.3 Other Uses
Alloys
Alloys
2.2 Biological Properties
2.2.1 Toxicity
NA
Toxic
2.2.2 Present in Human Body
60% Transition Metals Metals have it !
60% Transition Metals Metals have it !
2.2.3 In Blood
Sodium Metal
Not Available
Rank: N/A (Overall)
0.04 Blood/mg dm-3
Rank: 18 (Overall)
Plutonium Metal
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2.3.2 In Bone
Calcium Metal
Not Available
Rank: N/A (Overall)
0.04 p.p.m.
Rank: 27 (Overall)
Plutonium Metal
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3 Physical
3.1 Melting Point
Tungsten Metal
1,966.00 °C
Rank: 12 (Overall)
1,495.00 °C
Rank: 29 (Overall)
Francium Metal
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3.2 Boiling Point
Tungsten Metal
3,727.00 °C
Rank: 17 (Overall)
2,870.00 °C
Rank: 34 (Overall)
Flerovium Metal
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3.4 Appearance
3.4.1 Physical State
Solid
Solid
3.4.2 Color
Silvery White
Gray
3.4.3 Luster
Metallic
Metallic
3.5 Hardness
3.5.1 Mohs Hardness
Chromium Metal
6.00
Rank: 6 (Overall)
5.00
Rank: 8 (Overall)
Cesium Metal
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4.2.2 Brinell Hardness
Osmium Metal
980.00 MPa
Rank: 9 (Overall)
470.00 MPa
Rank: 26 (Overall)
Cesium Metal
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4.3.2 Vickers Hardness
Tungsten Metal
1,100.00 MPa
Rank: 9 (Overall)
1,043.00 MPa
Rank: 11 (Overall)
Palladium Metal
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4.4 Speed of Sound
Technetium Metal
4,700.00 m/s
Rank: 15 (Overall)
4,720.00 m/s
Rank: 14 (Overall)
Thallium Metal
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4.5 Optical Properties
4.5.1 Refractive Index
Palladium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury Metal
4.5.3 Reflectivity
Silver Metal
84.00 %
Rank: 4 (Overall)
67.00 %
Rank: 11 (Overall)
Molybdenum Metal
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4.6 Allotropes
6% Transition Metals Metals have it !
6% Transition Metals Metals have it !
4.6.1 α Allotropes
Not Available
α-Cobalt
4.6.2 β Allotropes
Not Available
β-Cobalt
4.6.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Rh
Co
5.2 Isotopes
5.2.1 Known Isotopes
Palladium Metal
16
Rank: 23 (Overall)
26
Rank: 13 (Overall)
Tennessine Metal
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold Metal
2.28
Rank: 3 (Overall)
1.88
Rank: 12 (Overall)
Francium Metal
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5.4.2 Sanderson Electronegativity
Cobalt Metal
Not Available
Rank: N/A (Overall)
2.56
Rank: 1 (Overall)
Cesium Metal
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5.5.2 Allred Rochow Electronegativity
Gallium Metal
1.45
Rank: 16 (Overall)
1.70
Rank: 5 (Overall)
Cesium Metal
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5.5.3 Mulliken-Jaffe Electronegativity
Polonium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium Metal
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5.5.5 Allen Electronegativity
Berkelium Metal
1.56
Rank: 24 (Overall)
1.84
Rank: 10 (Overall)
Cesium Metal
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5.6 Electropositivity
5.6.1 Pauling Electropositivity
Francium Metal
1.72
Rank: 50 (Overall)
2.12
Rank: 41 (Overall)
Gold Metal
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5.8 Ionization Energies
5.8.1 1st Energy Level
Chromium Metal
719.70 kJ/mol
Rank: 29 (Overall)
760.40 kJ/mol
Rank: 19 (Overall)
Cesium Metal
5.9.1 2nd Energy Level
Chromium Metal
1,740.00 kJ/mol
Rank: 26 (Overall)
1,648.00 kJ/mol
Rank: 31 (Overall)
Ruthenium Metal
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5.9.2 3rd Energy Level
Chromium Metal
2,997.00 kJ/mol
Rank: 27 (Overall)
3,232.00 kJ/mol
Rank: 22 (Overall)
Osmium Metal
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6.1.2 4th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
4,950.00 kJ/mol
Rank: 19 (Overall)
Thorium Metal
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6.1.4 5th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
7,670.00 kJ/mol
Rank: 12 (Overall)
Dubnium Metal
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6.2.2 6th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
9,840.00 kJ/mol
Rank: 12 (Overall)
Seaborgium Metal
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6.2.4 7th Energy level
Chromium Metal
Not Available
Rank: N/A (Overall)
12,440.00 kJ/mol
Rank: 11 (Overall)
Bohrium Metal
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6.3.1 8th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
15,230.00 kJ/mol
Rank: 12 (Overall)
Hassium Metal
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6.3.2 9th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
17,959.00 kJ/mol
Rank: 13 (Overall)
Yttrium Metal
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6.5.2 10th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
26,570.00 kJ/mol
Rank: 7 (Overall)
Strontium Metal
6.5.4 11th Energy Level
Magnesium Metal
Not Available
Rank: N/A (Overall)
29,400.00 kJ/mol
Rank: 8 (Overall)
Yttrium Metal
6.5.5 12th Energy Level
Magnesium Metal
Not Available
Rank: N/A (Overall)
32,400.00 kJ/mol
Rank: 8 (Overall)
Molybdenum Metal
6.5.7 13th Energy Level
Titanium Metal
Not Available
Rank: N/A (Overall)
36,600.00 kJ/mol
Rank: 8 (Overall)
Molybdenum Metal
6.6.1 14th Energy Level
Vanadium Metal
Not Available
Rank: N/A (Overall)
39,700.00 kJ/mol
Rank: 9 (Overall)
Molybdenum Metal
7.2.1 15th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
42,800.00 kJ/mol
Rank: 12 (Overall)
Manganese Metal
7.2.2 16th Energy Level
Manganese Metal
Not Available
Rank: N/A (Overall)
49,396.00 kJ/mol
Rank: 11 (Overall)
Iron Metal
7.3.1 17th Energy Level
Iron Metal
Not Available
Rank: N/A (Overall)
52,737.00 kJ/mol
Rank: 13 (Overall)
Cobalt Metal
8.1.1 18th Energy Level
Cobalt Metal
Not Available
Rank: N/A (Overall)
134,810.00 kJ/mol
Rank: 1 (Overall)
Nickel Metal
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8.2.1 19th Energy Level
Nickel Metal
Not Available
Rank: N/A (Overall)
145,170.00 kJ/mol
Rank: 2 (Overall)
Copper Metal
8.3.1 20th Energy Level
Zinc Metal
Not Available
Rank: N/A (Overall)
154,700.00 kJ/mol
Rank: 4 (Overall)
Molybdenum Metal
8.5.1 21st Energy Level
Zinc Metal
Not Available
Rank: N/A (Overall)
167,400.00 kJ/mol
Rank: 4 (Overall)
Molybdenum Metal
8.5.2 22nd Energy Level
Copper Metal
Not Available
Rank: N/A (Overall)
178,100.00 kJ/mol
Rank: 3 (Overall)
Molybdenum Metal
8.6.2 23rd Energy Level
Copper Metal
Not Available
Rank: N/A (Overall)
189,300.00 kJ/mol
Rank: 3 (Overall)
Molybdenum Metal
8.6.4 24th Energy Level
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum Metal
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8.6.6 25th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum Metal
8.6.7 26th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum Metal
8.8.2 27th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum Metal
8.8.3 28th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
8.8.5 29th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
8.8.6 30th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
8.9 Electrochemical Equivalent
Francium Metal
1.28 g/amp-hr
Rank: 50 (Overall)
1.10 g/amp-hr
Rank: 57 (Overall)
Beryllium Metal
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8.11 Electron Work Function
Platinum Metal
4.98 eV
Rank: 6 (Overall)
5.00 eV
Rank: 5 (Overall)
Cesium Metal
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8.12 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes
Chemical Stability, Ionization
9 Atomic
9.1 Atomic Number
Tennessine Metal
45
Rank: 67 (Overall)
22
Rank: 84 (Overall)
Lithium Metal
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9.3 Electron Configuration
[Kr] 4d8 5s1
[Ar] 3d2 4s2
9.4 Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
9.4.1 Crystal Lattice
9.5 Atom
9.5.1 Number of Protons
Tennessine Metal
45
Rank: 66 (Overall)
22
Rank: 83 (Overall)
Lithium Metal
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10.1.2 Number of Neutrons
Flerovium Metal
58
Rank: 49 (Overall)
26
Rank: 62 (Overall)
Lithium Metal
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10.1.4 Number of Electrons
Tennessine Metal
45
Rank: 66 (Overall)
22
Rank: 83 (Overall)
Lithium Metal
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10.2 Radius of an Atom
10.2.1 Atomic Radius
Cesium Metal
134.00 pm
Rank: 43 (Overall)
147.00 pm
Rank: 34 (Overall)
Beryllium Metal
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10.3.2 Covalent Radius
Francium Metal
142.00 pm
Rank: 42 (Overall)
160.00 pm
Rank: 30 (Overall)
Beryllium Metal
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10.3.3 Van der Waals Radius
Francium Metal
200.00 pm
Rank: 28 (Overall)
200.00 pm
Rank: 28 (Overall)
Zinc Metal
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10.4 Atomic Weight
Tennessine Metal
102.91 amu
Rank: 61 (Overall)
47.87 amu
Rank: 78 (Overall)
Lithium Metal
10.5 Atomic Volume
Cesium Metal
8.30 cm3/mol
Rank: 59 (Overall)
10.64 cm3/mol
Rank: 46 (Overall)
Manganese Metal
11.2 Adjacent Atomic Numbers
11.2.1 Previous Element
11.2.2 Next Element
11.3 Valence Electron Potential
Platinum Metal
64.00 (-eV)
Rank: 22 (Overall)
95.20 (-eV)
Rank: 10 (Overall)
Francium Metal
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11.5 Lattice Constant
Manganese Metal
380.34 pm
Rank: 27 (Overall)
295.08 pm
Rank: 61 (Overall)
Beryllium Metal
11.7 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
11.8 Lattice C/A Ratio
Cadmium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium Metal
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
Hassium Metal
12.41 g/cm3
Rank: 28 (Overall)
4.51 g/cm3
Rank: 70 (Overall)
Lithium Metal
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12.1.2 Density When Liquid (at m.p.)
Osmium Metal
10.70 g/cm3
Rank: 14 (Overall)
4.11 g/cm3
Rank: 49 (Overall)
Lithium Metal
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12.3 Tensile Strength
Iron Metal
951.00 MPa
Rank: 5 (Overall)
434.00 MPa
Rank: 9 (Overall)
Indium Metal
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12.5 Viscosity
Mercury Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury Metal
12.6 Vapor Pressure
12.6.1 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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12.7.2 Vapor Pressure at 2000 K
Chromium Metal
0.02 (Pa)
Rank: 19 (Overall)
0.98 (Pa)
Rank: 14 (Overall)
Tungsten Metal
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12.8 Elasticity properties
12.8.1 Shear Modulus
Osmium Metal
150.00 GPa
Rank: 6 (Overall)
44.00 GPa
Rank: 17 (Overall)
Potassium Metal
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12.8.3 Bulk Modulus
Osmium Metal
275.00 GPa
Rank: 5 (Overall)
110.00 GPa
Rank: 15 (Overall)
Cesium Metal
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12.8.4 Young's Modulus
Iridium Metal
380.00 GPa
Rank: 5 (Overall)
116.00 GPa
Rank: 18 (Overall)
Cesium Metal
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12.9 Poisson Ratio
Gallium Metal
0.26
Rank: 22 (Overall)
0.32
Rank: 12 (Overall)
Beryllium Metal
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12.10 Other Mechanical Properties
Malleable
Ductile
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
Cobalt Metal
12.41
Rank: 20 (Overall)
4,500.00
Rank: 1 (Overall)
Lithium Metal
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13.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
13.1.3 Permeability
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth Metal
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13.1.4 Susceptibility
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth Metal
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13.2 Electrical Properties
13.2.1 Electrical Property
Conductor
Poor Conductor
13.2.2 Resistivity
Mercury Metal
43.30 nΩ·m
Rank: 46 (Overall)
420.00 nΩ·m
Rank: 12 (Overall)
Thallium Metal
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13.2.3 Electrical Conductivity
Silver Metal
0.21 106/cm Ω
Rank: 8 (Overall)
0.02 106/cm Ω
Rank: 42 (Overall)
Plutonium Metal
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13.2.4 Electron Affinity
Gold Metal
109.70 kJ/mol
Rank: 7 (Overall)
7.60 kJ/mol
Rank: 37 (Overall)
Mercury Metal
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14 Thermal
14.1 Specific Heat
Lithium Metal
0.24 J/(kg K)
Rank: 22 (Overall)
0.52 J/(kg K)
Rank: 9 (Overall)
Americium Metal
14.2 Molar Heat Capacity
Americium Metal
24.98 J/mol·K
Rank: 45 (Overall)
25.06 J/mol·K
Rank: 44 (Overall)
Beryllium Metal
14.3 Thermal Conductivity
Silver Metal
150.00 W/m·K
Rank: 9 (Overall)
21.90 W/m·K
Rank: 43 (Overall)
Neptunium Metal
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14.4 Critical Temperature
Lithium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium Metal
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14.5 Thermal Expansion
Cesium Metal
8.20 µm/(m·K)
Rank: 47 (Overall)
8.60 µm/(m·K)
Rank: 45 (Overall)
Tungsten Metal
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14.6 Enthalpy
14.6.1 Enthalpy of Vaporization
Tungsten Metal
495.40 kJ/mol
Rank: 12 (Overall)
429.00 kJ/mol
Rank: 15 (Overall)
Zinc Metal
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14.6.2 Enthalpy of Fusion
Tungsten Metal
21.76 kJ/mol
Rank: 10 (Overall)
15.48 kJ/mol
Rank: 19 (Overall)
Cesium Metal
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14.6.3 Enthalpy of Atomization
Tungsten Metal
556.50 kJ/mol
Rank: 12 (Overall)
468.60 kJ/mol
Rank: 15 (Overall)
Mercury Metal
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14.7 Standard Molar Entropy
Protactinium Me..
31.50 J/mol.K
Rank: 49 (Overall)
27.30 J/mol.K
Rank: 56 (Overall)
Beryllium Metal
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