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Radium
Radium

Calcium
Calcium



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Radium
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Calcium

Radium vs Calcium

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1 Periodic Table
1.1 Symbol
Ra
Ca
1.2 Group Number
Tennessine
2
Rank: 16 (Overall)
2
Rank: 16 (Overall)
Gadolinium
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1.3 Period Number
Uranium
7
Rank: 1 (Overall)
4
Rank: 4 (Overall)
Lithium
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1.4 Block
s block
s block
1.5 Element Family
Alkaline Earth
Alkaline Earth
1.6 CAS Number
Roentgenium
7440144
Rank: 65 (Overall)
7440702
Rank: 21 (Overall)
Aluminium
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1.7 Space Group Name
Im_ 3m
Fm_ 3m
1.8 Space Group Number
Sodium
229.00
Rank: 1 (Overall)
225.00
Rank: 2 (Overall)
Plutonium
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2 Facts
2.1 Interesting Facts
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  • 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.
2.2 Sources
Mining, Ores of metals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Not Available
Humphry Davy
2.3.2 Discovery
In 1898
In 1808
2.4 Abundance
2.4.1 Abundance In Universe
Iron
Not Available
Rank: N/A (Overall)
7 * 10-3 %
Rank: 3 (Overall)
Thallium
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2.4.2 Abundance In Sun
Iron
~-9999 %
Rank: N/A (Overall)
~0.007 %
Rank: 4 (Overall)
Beryllium
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2.4.3 Abundance In Meteorites
Iron
Not Available
Rank: N/A (Overall)
1.10 %
Rank: 4 (Overall)
Gold
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2.4.4 Abundance In Earth's Crust
Aluminium
0.00 %
Rank: 57 (Overall)
5.00 %
Rank: 3 (Overall)
Radium
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2.4.5 Abundance In Oceans
Sodium
0.00 %
Rank: 45 (Overall)
0.00 %
Rank: 5 (Overall)
Protactinium
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2.4.6 Abundance In Humans
Calcium
0.00 %
Rank: 20 (Overall)
1.40 %
Rank: 1 (Overall)
Radium
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3 Uses
3.1 Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  • 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.
3.1.1 Industrial Uses
NA
Chemical Industry
3.1.2 Medical Uses
Pharmaceutical Industry
Dentistry, Pharmaceutical Industry
3.1.3 Other Uses
NA
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Highly Toxic
Non Toxic
3.2.2 Present in Human Body
83% Alkaline Earth Metals Metals have it !
83% Alkaline Earth Metals Metals have it !
3.2.3 In Blood
Sodium
Not Available
Rank: N/A (Overall)
60.50 Blood/mg dm-3
Rank: 4 (Overall)
Plutonium
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3.2.4 In Bone
Calcium
Not Available
Rank: N/A (Overall)
170,000.00 p.p.m.
Rank: 1 (Overall)
Plutonium
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4 Physical
4.1 Melting Point
Tungsten
700.00 °C
Rank: 59 (Overall)
839.00 °C
Rank: 52 (Overall)
Francium
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4.2 Boiling Point
Tungsten
1,737.00 °C
Rank: 54 (Overall)
1,484.00 °C
Rank: 58 (Overall)
Flerovium
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery White
Gray
4.3.3 Luster
Metallic
NA
4.4 Hardness
4.4.1 Mohs Hardness
Chromium
Not Available
Rank: N/A (Overall)
1.75
Rank: 17 (Overall)
Cesium
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4.4.2 Brinell Hardness
Osmium
Not Available
Rank: N/A (Overall)
170.00 MPa
Rank: 44 (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)
3,810.00 m/s
Rank: 19 (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 Alkaline Earth Metals Metals has it !
No Alkaline Earth Metals 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
Ra
Ca
5.2 Isotopes
5.2.1 Known Isotopes
Palladium
33
Rank: 6 (Overall)
19
Rank: 20 (Overall)
Tennessine
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold
0.90
Rank: 49 (Overall)
1.00
Rank: 45 (Overall)
Francium
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5.3.2 Sanderson Electronegativity
Cobalt
Not Available
Rank: N/A (Overall)
0.95
Rank: 24 (Overall)
Cesium
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1.1.1 Allred Rochow Electronegativity
Gallium
0.97
Rank: 38 (Overall)
1.04
Rank: 34 (Overall)
Cesium
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1.2.1 Mulliken-Jaffe Electronegativity
Polonium
0.92
Rank: 20 (Overall)
1.08
Rank: 17 (Overall)
Cesium
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1.2.2 Allen Electronegativity
Berkelium
0.89
Rank: 42 (Overall)
1.03
Rank: 39 (Overall)
Cesium
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1.4 Electropositivity
1.4.1 Pauling Electropositivity
Francium
3.10
Rank: 5 (Overall)
3.00
Rank: 9 (Overall)
Gold
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1.6 Ionization Energies
1.6.1 1st Energy Level
Chromium
509.30 kJ/mol
Rank: 82 (Overall)
589.80 kJ/mol
Rank: 57 (Overall)
Cesium
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1.7.1 2nd Energy Level
Chromium
979.00 kJ/mol
Rank: 81 (Overall)
1,145.40 kJ/mol
Rank: 69 (Overall)
Ruthenium
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1.8.2 3rd Energy Level
Chromium
Not Available
Rank: N/A (Overall)
4,912.40 kJ/mol
Rank: 7 (Overall)
Osmium
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1.8.3 4th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
6,491.00 kJ/mol
Rank: 7 (Overall)
Thorium
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1.8.5 5th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
8,153.00 kJ/mol
Rank: 7 (Overall)
Dubnium
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1.8.6 6th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
10,496.00 kJ/mol
Rank: 8 (Overall)
Seaborgium
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1.8.8 7th Energy level
Chromium
Not Available
Rank: N/A (Overall)
12,270.00 kJ/mol
Rank: 12 (Overall)
Bohrium
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1.8.9 8th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
14,206.00 kJ/mol
Rank: 15 (Overall)
Hassium
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1.8.10 9th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
18,191.00 kJ/mol
Rank: 12 (Overall)
Yttrium
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1.9.1 10th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
20,385.00 kJ/mol
Rank: 16 (Overall)
Strontium
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1.9.2 11th Energy Level
Magnesium
Not Available
Rank: N/A (Overall)
57,110.00 kJ/mol
Rank: 3 (Overall)
Yttrium
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1.9.3 12th Energy Level
Magnesium
Not Available
Rank: N/A (Overall)
63,410.00 kJ/mol
Rank: 3 (Overall)
Molybdenum
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1.9.4 13th Energy Level
Titanium
Not Available
Rank: N/A (Overall)
70,110.00 kJ/mol
Rank: 3 (Overall)
Molybdenum
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1.9.5 14th Energy Level
Vanadium
Not Available
Rank: N/A (Overall)
78,890.00 kJ/mol
Rank: 4 (Overall)
Molybdenum
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1.9.6 15th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
86,310.00 kJ/mol
Rank: 5 (Overall)
Manganese
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1.9.7 16th Energy Level
Manganese
Not Available
Rank: N/A (Overall)
94,000.00 kJ/mol
Rank: 6 (Overall)
Iron
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1.9.8 17th Energy Level
Iron
Not Available
Rank: N/A (Overall)
104,900.00 kJ/mol
Rank: 7 (Overall)
Cobalt
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1.9.9 18th Energy Level
Cobalt
Not Available
Rank: N/A (Overall)
111,711.00 kJ/mol
Rank: 8 (Overall)
Nickel
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1.9.10 19th Energy Level
Nickel
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Copper
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1.9.11 20th Energy Level
Zinc
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum
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1.9.12 21st Energy Level
Zinc
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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1.9.13 22nd Energy Level
Copper
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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1.9.14 23rd Energy Level
Copper
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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1.9.15 24th Energy Level
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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1.9.16 25th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
1.9.17 26th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
1.9.18 27th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
1.9.19 28th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
1.9.20 29th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
1.9.21 30th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
1.10 Electrochemical Equivalent
Francium
4.22 g/amp-hr
Rank: 6 (Overall)
0.75 g/amp-hr
Rank: 64 (Overall)
Beryllium
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1.11 Electron Work Function
Platinum
Not Available
Rank: N/A (Overall)
2.87 eV
Rank: 38 (Overall)
Cesium
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1.12 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Flammability, Ionization, Solubility
2 Atomic
2.1 Atomic Number
Tennessine
88
Rank: 30 (Overall)
20
Rank: 86 (Overall)
Lithium
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2.2 Electron Configuration
[Rn] 7s2
[Ar] 4s2
2.3 Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
2.3.1 Crystal Lattice
2.4 Atom
2.4.1 Number of Protons
Tennessine
88
Rank: 30 (Overall)
20
Rank: 85 (Overall)
Lithium
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2.4.2 Number of Neutrons
Flerovium
138
Rank: 16 (Overall)
20
Rank: 64 (Overall)
Lithium
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2.4.3 Number of Electrons
Tennessine
88
Rank: 30 (Overall)
20
Rank: 85 (Overall)
Lithium
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2.5 Radius of an Atom
2.5.1 Atomic Radius
Cesium
Not Available
Rank: N/A (Overall)
197.00 pm
Rank: 6 (Overall)
Beryllium
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2.5.2 Covalent Radius
Francium
221.00 pm
Rank: 3 (Overall)
176.00 pm
Rank: 22 (Overall)
Beryllium
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2.5.3 Van der Waals Radius
Francium
283.00 pm
Rank: 4 (Overall)
231.00 pm
Rank: 19 (Overall)
Zinc
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2.6 Atomic Weight
Tennessine
226.00 amu
Rank: 26 (Overall)
40.08 amu
Rank: 80 (Overall)
Lithium
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2.7 Atomic Volume
Cesium
45.20 cm3/mol
Rank: 4 (Overall)
29.90 cm3/mol
Rank: 7 (Overall)
Manganese
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2.8 Adjacent Atomic Numbers
2.8.1 Previous Element
2.8.2 Next Element
2.9 Valence Electron Potential
Platinum
20.10 (-eV)
Rank: 59 (Overall)
29.00 (-eV)
Rank: 53 (Overall)
Francium
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2.10 Lattice Constant
Manganese
514.80 pm
Rank: 13 (Overall)
558.84 pm
Rank: 9 (Overall)
Beryllium
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2.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
2.12 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
3.1.1 Density At Room Temperature
Hassium
5.50 g/cm3
Rank: 68 (Overall)
1.55 g/cm3
Rank: 80 (Overall)
Lithium
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3.1.2 Density When Liquid (at m.p.)
Osmium
Not Available
Rank: N/A (Overall)
1.38 g/cm3
Rank: 57 (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)
25.50 (Pa)
Rank: 3 (Overall)
Cerium
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3.4.2 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)
7.40 GPa
Rank: 45 (Overall)
Potassium
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3.5.2 Bulk Modulus
Osmium
Not Available
Rank: N/A (Overall)
17.00 GPa
Rank: 43 (Overall)
Cesium
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3.5.3 Young's Modulus
Iridium
Not Available
Rank: N/A (Overall)
20.00 GPa
Rank: 46 (Overall)
Cesium
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3.6 Poisson Ratio
Gallium
Not Available
Rank: N/A (Overall)
0.31
Rank: 13 (Overall)
Beryllium
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3.7 Other Mechanical Properties
NA
NA
4 Magnetic
4.1 Magnetic Characteristics
4.1.1 Specific Gravity
Cobalt
5.00
Rank: 56 (Overall)
4.58
Rank: 57 (Overall)
Lithium
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4.1.2 Magnetic Ordering
Nonmagnetic
Diamagnetic
4.1.3 Permeability
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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4.1.4 Susceptibility
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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4.2 Electrical Properties
4.2.1 Electrical Property
NA
Conductor
4.2.2 Resistivity
Mercury
100.00 nΩ·m
Rank: 31 (Overall)
33.60 nΩ·m
Rank: 48 (Overall)
Thallium
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4.2.3 Electrical Conductivity
Silver
Not Available
Rank: N/A (Overall)
0.30 106/cm Ω
Rank: 6 (Overall)
Plutonium
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1.2.1 Electron Affinity
Gold
Not Available
Rank: N/A (Overall)
2.37 kJ/mol
Rank: 39 (Overall)
Mercury
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2 Thermal
2.1 Specific Heat
Lithium
0.12 J/(kg K)
Rank: 40 (Overall)
0.63 J/(kg K)
Rank: 7 (Overall)
Americium
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2.3 Molar Heat Capacity
Americium
Not Available
Rank: N/A (Overall)
25.93 J/mol·K
Rank: 34 (Overall)
Beryllium
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2.7 Thermal Conductivity
Silver
18.60 W/m·K
Rank: 45 (Overall)
201.00 W/m·K
Rank: 5 (Overall)
Neptunium
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2.10 Critical Temperature
Lithium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium
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2.11 Thermal Expansion
Cesium
Not Available
Rank: N/A (Overall)
22.30 µm/(m·K)
Rank: 19 (Overall)
Tungsten
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2.12 Enthalpy
2.12.1 Enthalpy of Vaporization
Tungsten
Not Available
Rank: N/A (Overall)
150.00 kJ/mol
Rank: 47 (Overall)
Zinc
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2.12.2 Enthalpy of Fusion
Tungsten
Not Available
Rank: N/A (Overall)
8.54 kJ/mol
Rank: 41 (Overall)
Cesium
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2.12.3 Enthalpy of Atomization
Tungsten
163.00 kJ/mol
Rank: 51 (Overall)
184.00 kJ/mol
Rank: 46 (Overall)
Mercury
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2.13 Standard Molar Entropy
Protactinium
71.00 J/mol.K
Rank: 14 (Overall)
41.60 J/mol.K
Rank: 36 (Overall)
Beryllium
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