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Calcium
Calcium

Rhodium
Rhodium



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Calcium
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Rhodium

Calcium vs Rhodium

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1 Periodic Table
1.1 Symbol
Ca
Rh
1.2 Group Number
Tennessine
2
Rank: 16 (Overall)
9
Rank: 9 (Overall)
Gadolinium
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1.3 Period Number
Uranium
4
Rank: 4 (Overall)
5
Rank: 3 (Overall)
Lithium
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1.4 Block
s block
d block
1.5 Element Family
Alkaline Earth
Transition Metal
1.6 CAS Number
Roentgenium
7440702
Rank: 21 (Overall)
7440166
Rank: 63 (Overall)
Aluminium
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1.7 Space Group Name
Fm_ 3m
Fm_ 3m
1.8 Space Group Number
Sodium
225.00
Rank: 2 (Overall)
225.00
Rank: 2 (Overall)
Plutonium
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2 Facts
2.1 Interesting Facts
  • Calcium ranks 5th rank in the list of earth’s abundance Percentage.
  • It is found in the compound state.
  • Gypsum or calcium sulfate is used as plaster and plaster of paris.
  • 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.
2.2 Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Earth's crust, Found As a By-product, Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Humphry Davy
William Hyde Wollaston
2.3.2 Discovery
In 1808
In 1804
2.4 Abundance
2.4.1 Abundance In Universe
Iron
7 * 10-3 %
Rank: 3 (Overall)
6 * 10-8 %
Rank: 26 (Overall)
Thallium
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2.4.2 Abundance In Sun
Iron
~0.007 %
Rank: 4 (Overall)
~0.0000002 %
Rank: 25 (Overall)
Beryllium
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2.4.3 Abundance In Meteorites
Iron
1.10 %
Rank: 4 (Overall)
0.00 %
Rank: 36 (Overall)
Gold
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2.4.4 Abundance In Earth's Crust
Aluminium
5.00 %
Rank: 3 (Overall)
0.00 %
Rank: 55 (Overall)
Radium
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2.4.5 Abundance In Oceans
Sodium
0.00 %
Rank: 5 (Overall)
Not Available
Rank: N/A (Overall)
Protactinium
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2.4.6 Abundance In Humans
Calcium
1.40 %
Rank: 1 (Overall)
Not Available
Rank: N/A (Overall)
Radium
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3 Uses
3.1 Uses & Benefits
  • It is used as a reducing agent while preparing metals like thorium and uranium. It is also used as an alloying agent for metals such as aluminum, copper & lead.
  • Calcium carbonate or lime stone is used in cement.
  • 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.
3.1.1 Industrial Uses
Chemical Industry
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
Dentistry, Pharmaceutical Industry
NA
3.1.3 Other Uses
Alloys
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
NA
3.2.2 Present in Human Body
83% Alkaline Earth Metals Metals have it !
60% Transition Metals Metals have it !
3.2.3 In Blood
Sodium
60.50 Blood/mg dm-3
Rank: 4 (Overall)
Not Available
Rank: N/A (Overall)
Plutonium
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3.2.4 In Bone
Calcium
170,000.00 p.p.m.
Rank: 1 (Overall)
Not Available
Rank: N/A (Overall)
Plutonium
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4 Physical
4.1 Melting Point
Tungsten
839.00 °C
Rank: 52 (Overall)
1,966.00 °C
Rank: 12 (Overall)
Francium
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4.2 Boiling Point
Tungsten
1,484.00 °C
Rank: 58 (Overall)
3,727.00 °C
Rank: 17 (Overall)
Flerovium
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Gray
Silvery White
4.3.3 Luster
NA
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Chromium
1.75
Rank: 17 (Overall)
6.00
Rank: 6 (Overall)
Cesium
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4.4.2 Brinell Hardness
Osmium
170.00 MPa
Rank: 44 (Overall)
980.00 MPa
Rank: 9 (Overall)
Cesium
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4.4.3 Vickers Hardness
Tungsten
Not Available
Rank: N/A (Overall)
1,100.00 MPa
Rank: 9 (Overall)
Palladium
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4.5 Speed of Sound
Technetium
3,810.00 m/s
Rank: 19 (Overall)
4,700.00 m/s
Rank: 15 (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)
84.00 %
Rank: 4 (Overall)
Molybdenum
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4.7 Allotropes
No Alkaline Earth Metals Metals has it !
6% Transition Metals Metals have 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
Ca
Rh
5.2 Isotopes
5.2.1 Known Isotopes
Palladium
19
Rank: 20 (Overall)
16
Rank: 23 (Overall)
Tennessine
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold
1.00
Rank: 45 (Overall)
2.28
Rank: 3 (Overall)
Francium
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5.3.2 Sanderson Electronegativity
Cobalt
0.95
Rank: 24 (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.3.3 Allred Rochow Electronegativity
Gallium
1.04
Rank: 34 (Overall)
1.45
Rank: 16 (Overall)
Cesium
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5.3.4 Mulliken-Jaffe Electronegativity
Polonium
1.08
Rank: 17 (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.3.5 Allen Electronegativity
Berkelium
1.03
Rank: 39 (Overall)
1.56
Rank: 24 (Overall)
Cesium
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5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium
3.00
Rank: 9 (Overall)
1.72
Rank: 50 (Overall)
Gold
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5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium
589.80 kJ/mol
Rank: 57 (Overall)
719.70 kJ/mol
Rank: 29 (Overall)
Cesium
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5.5.2 2nd Energy Level
Chromium
1,145.40 kJ/mol
Rank: 69 (Overall)
1,740.00 kJ/mol
Rank: 26 (Overall)
Ruthenium
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5.5.3 3rd Energy Level
Chromium
4,912.40 kJ/mol
Rank: 7 (Overall)
2,997.00 kJ/mol
Rank: 27 (Overall)
Osmium
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5.5.4 4th Energy Level
Chromium
6,491.00 kJ/mol
Rank: 7 (Overall)
Not Available
Rank: N/A (Overall)
Thorium
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5.5.5 5th Energy Level
Chromium
8,153.00 kJ/mol
Rank: 7 (Overall)
Not Available
Rank: N/A (Overall)
Dubnium
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5.5.6 6th Energy Level
Chromium
10,496.00 kJ/mol
Rank: 8 (Overall)
Not Available
Rank: N/A (Overall)
Seaborgium
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5.5.7 7th Energy level
Chromium
12,270.00 kJ/mol
Rank: 12 (Overall)
Not Available
Rank: N/A (Overall)
Bohrium
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5.5.8 8th Energy Level
Chromium
14,206.00 kJ/mol
Rank: 15 (Overall)
Not Available
Rank: N/A (Overall)
Hassium
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5.5.9 9th Energy Level
Chromium
18,191.00 kJ/mol
Rank: 12 (Overall)
Not Available
Rank: N/A (Overall)
Yttrium
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5.5.10 10th Energy Level
Chromium
20,385.00 kJ/mol
Rank: 16 (Overall)
Not Available
Rank: N/A (Overall)
Strontium
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5.5.11 11th Energy Level
Magnesium
57,110.00 kJ/mol
Rank: 3 (Overall)
Not Available
Rank: N/A (Overall)
Yttrium
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5.5.12 12th Energy Level
Magnesium
63,410.00 kJ/mol
Rank: 3 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.13 13th Energy Level
Titanium
70,110.00 kJ/mol
Rank: 3 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.14 14th Energy Level
Vanadium
78,890.00 kJ/mol
Rank: 4 (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.15 15th Energy Level
Chromium
86,310.00 kJ/mol
Rank: 5 (Overall)
Not Available
Rank: N/A (Overall)
Manganese
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5.5.16 16th Energy Level
Manganese
94,000.00 kJ/mol
Rank: 6 (Overall)
Not Available
Rank: N/A (Overall)
Iron
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5.5.17 17th Energy Level
Iron
104,900.00 kJ/mol
Rank: 7 (Overall)
Not Available
Rank: N/A (Overall)
Cobalt
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5.5.18 18th Energy Level
Cobalt
111,711.00 kJ/mol
Rank: 8 (Overall)
Not Available
Rank: N/A (Overall)
Nickel
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5.5.19 19th Energy Level
Nickel
Not Available
Rank: 100 (Overall)
Not Available
Rank: N/A (Overall)
Copper
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5.5.20 20th Energy Level
Zinc
Not Available
Rank: 100 (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
0.75 g/amp-hr
Rank: 64 (Overall)
1.28 g/amp-hr
Rank: 50 (Overall)
Beryllium
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5.7 Electron Work Function
Platinum
2.87 eV
Rank: 38 (Overall)
4.98 eV
Rank: 6 (Overall)
Cesium
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5.8 Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility
Anti Corrosion, Ionization, Radioactive Isotopes
6 Atomic
6.1 Atomic Number
Tennessine
20
Rank: 86 (Overall)
45
Rank: 67 (Overall)
Lithium
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6.2 Electron Configuration
[Ar] 4s2
[Kr] 4d8 5s1
6.3 Crystal Structure
Face Centered Cubic (FCC)
Face Centered Cubic (FCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine
20
Rank: 85 (Overall)
45
Rank: 66 (Overall)
Lithium
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6.4.2 Number of Neutrons
Flerovium
20
Rank: 64 (Overall)
58
Rank: 49 (Overall)
Lithium
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6.4.3 Number of Electrons
Tennessine
20
Rank: 85 (Overall)
45
Rank: 66 (Overall)
Lithium
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6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium
197.00 pm
Rank: 6 (Overall)
134.00 pm
Rank: 43 (Overall)
Beryllium
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6.5.2 Covalent Radius
Francium
176.00 pm
Rank: 22 (Overall)
142.00 pm
Rank: 42 (Overall)
Beryllium
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6.5.3 Van der Waals Radius
Francium
231.00 pm
Rank: 19 (Overall)
200.00 pm
Rank: 28 (Overall)
Zinc
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6.6 Atomic Weight
Tennessine
40.08 amu
Rank: 80 (Overall)
102.91 amu
Rank: 61 (Overall)
Lithium
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6.7 Atomic Volume
Cesium
29.90 cm3/mol
Rank: 7 (Overall)
8.30 cm3/mol
Rank: 59 (Overall)
Manganese
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6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
Platinum
29.00 (-eV)
Rank: 53 (Overall)
64.00 (-eV)
Rank: 22 (Overall)
Francium
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6.10 Lattice Constant
Manganese
558.84 pm
Rank: 9 (Overall)
380.34 pm
Rank: 27 (Overall)
Beryllium
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6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Lattice C/A Ratio
Cadmium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
Hassium
1.55 g/cm3
Rank: 80 (Overall)
12.41 g/cm3
Rank: 28 (Overall)
Lithium
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7.1.2 Density When Liquid (at m.p.)
Osmium
1.38 g/cm3
Rank: 57 (Overall)
10.70 g/cm3
Rank: 14 (Overall)
Lithium
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7.2 Tensile Strength
Iron
Not Available
Rank: N/A (Overall)
951.00 MPa
Rank: 5 (Overall)
Indium
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7.3 Viscosity
Mercury
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
Strontium
25.50 (Pa)
Rank: 3 (Overall)
Not Available
Rank: N/A (Overall)
Cerium
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7.4.2 Vapor Pressure at 2000 K
Chromium
Not Available
Rank: N/A (Overall)
0.02 (Pa)
Rank: 19 (Overall)
Tungsten
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7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium
7.40 GPa
Rank: 45 (Overall)
150.00 GPa
Rank: 6 (Overall)
Potassium
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7.5.2 Bulk Modulus
Osmium
17.00 GPa
Rank: 43 (Overall)
275.00 GPa
Rank: 5 (Overall)
Cesium
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7.5.3 Young's Modulus
Iridium
20.00 GPa
Rank: 46 (Overall)
380.00 GPa
Rank: 5 (Overall)
Cesium
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7.6 Poisson Ratio
Gallium
0.31
Rank: 13 (Overall)
0.26
Rank: 22 (Overall)
Beryllium
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7.7 Other Mechanical Properties
NA
Malleable
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt
4.58
Rank: 57 (Overall)
12.41
Rank: 20 (Overall)
Lithium
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8.1.2 Magnetic Ordering
Diamagnetic
Paramagnetic
8.1.3 Permeability
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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8.1.4 Susceptibility
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Conductor
8.2.2 Resistivity
Mercury
33.60 nΩ·m
Rank: 48 (Overall)
43.30 nΩ·m
Rank: 46 (Overall)
Thallium
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8.2.3 Electrical Conductivity
Silver
0.30 106/cm Ω
Rank: 6 (Overall)
0.21 106/cm Ω
Rank: 8 (Overall)
Plutonium
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8.2.4 Electron Affinity
Gold
2.37 kJ/mol
Rank: 39 (Overall)
109.70 kJ/mol
Rank: 7 (Overall)
Mercury
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9 Thermal
9.1 Specific Heat
Lithium
0.63 J/(kg K)
Rank: 7 (Overall)
0.24 J/(kg K)
Rank: 22 (Overall)
Americium
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9.2 Molar Heat Capacity
Americium
25.93 J/mol·K
Rank: 34 (Overall)
24.98 J/mol·K
Rank: 45 (Overall)
Beryllium
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9.3 Thermal Conductivity
Silver
201.00 W/m·K
Rank: 5 (Overall)
150.00 W/m·K
Rank: 9 (Overall)
Neptunium
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9.4 Critical Temperature
Lithium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium
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9.5 Thermal Expansion
Cesium
22.30 µm/(m·K)
Rank: 19 (Overall)
8.20 µm/(m·K)
Rank: 47 (Overall)
Tungsten
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9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten
150.00 kJ/mol
Rank: 47 (Overall)
495.40 kJ/mol
Rank: 12 (Overall)
Zinc
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9.6.2 Enthalpy of Fusion
Tungsten
8.54 kJ/mol
Rank: 41 (Overall)
21.76 kJ/mol
Rank: 10 (Overall)
Cesium
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9.6.3 Enthalpy of Atomization
Tungsten
184.00 kJ/mol
Rank: 46 (Overall)
556.50 kJ/mol
Rank: 12 (Overall)
Mercury
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9.7 Standard Molar Entropy
Protactinium
41.60 J/mol.K
Rank: 36 (Overall)
31.50 J/mol.K
Rank: 49 (Overall)
Beryllium
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