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Rubidium
Rubidium

Sodium
Sodium



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Rubidium
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Sodium

Rubidium Sodium Comparison

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1 Periodic Table
1.1 Symbol
Rb
Na
1.2 Group Number
Tennessine Metal
1
Rank: 17 (Overall)
1
Rank: 17 (Overall)
Gadolinium Metal
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1.3 Period Number
Uranium Metal
5
Rank: 3 (Overall)
3
Rank: 5 (Overall)
Lithium Metal
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1.4 Block
s block
s block
1.5 Element Family
Alkali
Alkali
1.6 CAS Number
Roentgenium Met..
7440177
Rank: 62 (Overall)
7440235
Rank: 57 (Overall)
Aluminium Metal
1.7 Space Group Name
Im_ 3m
Im_ 3m
1.8 Space Group Number
Sodium Metal
229.00
Rank: 1 (Overall)
229.00
Rank: 1 (Overall)
Plutonium Metal
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2 Facts
2.1 Interesting Facts
  • Rubidium metal is 16th most common element found in the earth crust.
  • Rubidium metal also found in minerals as well as seawater.
  • At room temperature Sodium metal is very soft as it can be chopped down into pieces with butter knife.
  • The most common compound of Sodium is NaCl (Salt).
2.2 Sources
Obtained from Lithium Production.
By Electrolysis Process, Mining
2.3 History
2.3.1 Who Discovered
Robert Bunsen and Gustav Kirchhoff
Humphry Davy
2.3.2 Discovery
In 1861
In 1807
2.4 Abundance
2.4.1 Abundance In Universe
Iron Metal
1 * 10-6 %
Rank: 16 (Overall)
2 * 10-3 %
Rank: 6 (Overall)
Thallium Metal
2.4.2 Abundance In Sun
Iron Metal
~0.000003 %
Rank: 17 (Overall)
~0.004 %
Rank: 6 (Overall)
Beryllium Metal
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2.4.3 Abundance In Meteorites
Iron Metal
0.00 %
Rank: 19 (Overall)
0.55 %
Rank: 6 (Overall)
Gold Metal
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2.4.4 Abundance In Earth's Crust
Aluminium Metal
0.01 %
Rank: 18 (Overall)
2.30 %
Rank: 5 (Overall)
Radium Metal
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2.4.5 Abundance In Oceans
Sodium Metal
0.00 %
Rank: 7 (Overall)
1.10 %
Rank: 1 (Overall)
Protactinium Metal
2.4.6 Abundance In Humans
Calcium Metal
0.00 %
Rank: 7 (Overall)
0.14 %
Rank: 3 (Overall)
Radium Metal
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3 Uses
3.1 Uses & Benefits
  • 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.
  • In some nuclear reactors sodium is used as a heat exchanger.
  • Compound of Sodium metals called Salt (Sodium chloride) is used in Food.
3.1.1 Industrial Uses
NA
Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
Pharmaceutical Industry
3.1.3 Other Uses
Alloys, Research Purposes
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
Toxic
3.2.2 Present in Human Body
83% Alkali Metals Metals have it !
83% Alkali Metals Metals have it !
3.2.3 In Blood
Sodium Metal
2.49 Blood/mg dm-3
Rank: 7 (Overall)
1,970.00 Blood/mg dm-3
Rank: 1 (Overall)
Plutonium Metal
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3.2.4 In Bone
Calcium Metal
5.00 p.p.m.
Rank: 13 (Overall)
10,000.00 p.p.m.
Rank: 2 (Overall)
Plutonium Metal
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4 Physical
4.1 Melting Point
Tungsten Metal
38.89 °C
Rank: 78 (Overall)
97.72 °C
Rank: 75 (Overall)
Francium Metal
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4.2 Boiling Point
Tungsten Metal
688.00 °C
Rank: 74 (Overall)
883.00 °C
Rank: 71 (Overall)
Flerovium Metal
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Grayish White
Silvery White
4.3.3 Luster
NA
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Chromium Metal
0.30
Rank: 24 (Overall)
0.50
Rank: 22 (Overall)
Cesium Metal
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4.4.2 Brinell Hardness
Osmium Metal
0.22 MPa
Rank: 55 (Overall)
0.69 MPa
Rank: 53 (Overall)
Cesium Metal
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4.4.3 Vickers Hardness
Tungsten Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Palladium Metal
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4.5 Speed of Sound
Technetium Metal
1,300.00 m/s
Rank: 50 (Overall)
3,200.00 m/s
Rank: 24 (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
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
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4.7 Allotropes
No Alkali Metals Metals has it !
No Alkali 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
Rb
Na
5.2 Isotopes
5.2.1 Known Isotopes
Palladium Metal
29
Rank: 10 (Overall)
17
Rank: 22 (Overall)
Tennessine Metal
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold Metal
0.82
Rank: 51 (Overall)
0.93
Rank: 48 (Overall)
Francium Metal
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5.3.2 Sanderson Electronegativity
Cobalt Metal
0.31
Rank: 32 (Overall)
0.56
Rank: 30 (Overall)
Cesium Metal
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5.3.3 Allred Rochow Electronegativity
Gallium Metal
0.89
Rank: 40 (Overall)
1.01
Rank: 35 (Overall)
Cesium Metal
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5.3.4 Mulliken-Jaffe Electronegativity
Polonium Metal
0.69
Rank: 24 (Overall)
0.91
Rank: 21 (Overall)
Cesium Metal
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5.3.5 Allen Electronegativity
Berkelium Metal
0.71
Rank: 46 (Overall)
0.87
Rank: 44 (Overall)
Cesium Metal
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5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium Metal
3.18
Rank: 3 (Overall)
3.07
Rank: 6 (Overall)
Gold Metal
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5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium Metal
403.00 kJ/mol
Rank: 88 (Overall)
495.80 kJ/mol
Rank: 85 (Overall)
Cesium Metal
5.5.2 2nd Energy Level
Chromium Metal
2,633.00 kJ/mol
Rank: 6 (Overall)
4,562.00 kJ/mol
Rank: 4 (Overall)
Ruthenium Metal
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5.5.3 3rd Energy Level
Chromium Metal
3,860.00 kJ/mol
Rank: 11 (Overall)
6,910.30 kJ/mol
Rank: 6 (Overall)
Osmium Metal
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5.5.4 4th Energy Level
Chromium Metal
5,080.00 kJ/mol
Rank: 18 (Overall)
9,543.00 kJ/mol
Rank: 5 (Overall)
Thorium Metal
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5.5.5 5th Energy Level
Chromium Metal
6,850.00 kJ/mol
Rank: 19 (Overall)
13,354.00 kJ/mol
Rank: 4 (Overall)
Dubnium Metal
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5.5.6 6th Energy Level
Chromium Metal
8,140.00 kJ/mol
Rank: 20 (Overall)
16,613.00 kJ/mol
Rank: 4 (Overall)
Seaborgium Metal
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5.5.7 7th Energy level
Chromium Metal
9,570.00 kJ/mol
Rank: 20 (Overall)
20,117.00 kJ/mol
Rank: 4 (Overall)
Bohrium Metal
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5.5.8 8th Energy Level
Chromium Metal
13,120.00 kJ/mol
Rank: 17 (Overall)
25,496.00 kJ/mol
Rank: 4 (Overall)
Hassium Metal
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5.5.9 9th Energy Level
Chromium Metal
14,500.00 kJ/mol
Rank: 18 (Overall)
28,932.00 kJ/mol
Rank: 4 (Overall)
Yttrium Metal
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5.5.10 10th Energy Level
Chromium Metal
26,740.00 kJ/mol
Rank: 6 (Overall)
141,362.00 kJ/mol
Rank: 2 (Overall)
Strontium Metal
5.5.11 11th Energy Level
Magnesium Metal
Not Available
Rank: N/A (Overall)
159,076.00 kJ/mol
Rank: 2 (Overall)
Yttrium Metal
5.5.12 12th Energy Level
Magnesium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.13 13th Energy Level
Titanium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.14 14th Energy Level
Vanadium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.15 15th Energy Level
Chromium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Manganese Metal
5.5.16 16th Energy Level
Manganese Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Iron Metal
5.5.17 17th Energy Level
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cobalt Metal
5.5.18 18th Energy Level
Cobalt Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Nickel Metal
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5.5.19 19th Energy Level
Nickel Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Copper Metal
5.5.20 20th Energy Level
Zinc Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.21 21st Energy Level
Zinc Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.22 22nd Energy Level
Copper Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.23 23rd Energy Level
Copper Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.24 24th Energy Level
Iron Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
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5.5.25 25th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.26 26th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum Metal
5.5.27 27th Energy Level
Molybdenum Metal
Not Available
Rank: N/A (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
3.19 g/amp-hr
Rank: 14 (Overall)
0.86 g/amp-hr
Rank: 62 (Overall)
Beryllium Metal
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5.7 Electron Work Function
Platinum Metal
2.16 eV
Rank: 45 (Overall)
2.75 eV
Rank: 40 (Overall)
Cesium Metal
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5.8 Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Corrosion, Flammability, Ionization, Solubility
6 Atomic
6.1 Atomic Number
Tennessine Metal
37
Rank: 75 (Overall)
11
Rank: 90 (Overall)
Lithium Metal
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6.2 Electron Configuration
[Kr] 5s1
[Ne] 3s1
6.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine Metal
37
Rank: 74 (Overall)
11
Rank: 89 (Overall)
Lithium Metal
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6.4.2 Number of Neutrons
Flerovium Metal
48
Rank: 56 (Overall)
12
Rank: 66 (Overall)
Lithium Metal
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6.4.3 Number of Electrons
Tennessine Metal
37
Rank: 74 (Overall)
11
Rank: 89 (Overall)
Lithium Metal
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6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium Metal
248.00 pm
Rank: 2 (Overall)
186.00 pm
Rank: 9 (Overall)
Beryllium Metal
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6.5.2 Covalent Radius
Francium Metal
220.00 pm
Rank: 4 (Overall)
166.00 pm
Rank: 27 (Overall)
Beryllium Metal
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6.5.3 Van der Waals Radius
Francium Metal
303.00 pm
Rank: 3 (Overall)
227.00 pm
Rank: 21 (Overall)
Zinc Metal
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6.6 Atomic Weight
Tennessine Metal
85.47 amu
Rank: 69 (Overall)
22.99 amu
Rank: 84 (Overall)
Lithium Metal
6.7 Atomic Volume
Cesium Metal
55.90 cm3/mol
Rank: 2 (Overall)
23.70 cm3/mol
Rank: 10 (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
9.47 (-eV)
Rank: 65 (Overall)
14.10 (-eV)
Rank: 61 (Overall)
Francium Metal
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6.10 Lattice Constant
Manganese Metal
558.50 pm
Rank: 10 (Overall)
429.06 pm
Rank: 19 (Overall)
Beryllium Metal
6.11 Lattice Angles
π/2, π/2, π/2
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
1.53 g/cm3
Rank: 81 (Overall)
0.97 g/cm3
Rank: 82 (Overall)
Lithium Metal
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7.1.2 Density When Liquid (at m.p.)
Osmium Metal
1.46 g/cm3
Rank: 56 (Overall)
0.93 g/cm3
Rank: 58 (Overall)
Lithium Metal
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7.2 Tensile Strength
Iron Metal
Not Available
Rank: N/A (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
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Tungsten Metal
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7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium Metal
Not Available
Rank: N/A (Overall)
3.30 GPa
Rank: 50 (Overall)
Potassium Metal
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7.5.2 Bulk Modulus
Osmium Metal
2.50 GPa
Rank: 49 (Overall)
6.30 GPa
Rank: 47 (Overall)
Cesium Metal
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7.5.3 Young's Modulus
Iridium Metal
2.40 GPa
Rank: 57 (Overall)
10.00 GPa
Rank: 52 (Overall)
Cesium Metal
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7.6 Poisson Ratio
Gallium Metal
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium Metal
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7.7 Other Mechanical Properties
Ductile
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt Metal
1.53
Rank: 67 (Overall)
0.97
Rank: 68 (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
Conductor
Conductor
8.2.2 Resistivity
Mercury Metal
128.00 nΩ·m
Rank: 26 (Overall)
47.70 nΩ·m
Rank: 43 (Overall)
Thallium Metal
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8.2.3 Electrical Conductivity
Silver Metal
0.08 106/cm Ω
Rank: 24 (Overall)
0.21 106/cm Ω
Rank: 9 (Overall)
Plutonium Metal
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8.2.4 Electron Affinity
Gold Metal
46.90 kJ/mol
Rank: 24 (Overall)
52.80 kJ/mol
Rank: 19 (Overall)
Mercury Metal
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9 Thermal
9.1 Specific Heat
Lithium Metal
0.36 J/(kg K)
Rank: 17 (Overall)
1.23 J/(kg K)
Rank: 3 (Overall)
Americium Metal
9.2 Molar Heat Capacity
Americium Metal
31.06 J/mol·K
Rank: 5 (Overall)
28.23 J/mol·K
Rank: 10 (Overall)
Beryllium Metal
9.3 Thermal Conductivity
Silver Metal
58.20 W/m·K
Rank: 26 (Overall)
142.00 W/m·K
Rank: 11 (Overall)
Neptunium Metal
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9.4 Critical Temperature
Lithium Metal
2,093.00 K
Rank: 4 (Overall)
2,573.00 K
Rank: 2 (Overall)
Ytterbium Metal
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9.5 Thermal Expansion
Cesium Metal
90.00 µm/(m·K)
Rank: 2 (Overall)
71.00 µm/(m·K)
Rank: 4 (Overall)
Tungsten Metal
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9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten Metal
69.20 kJ/mol
Rank: 56 (Overall)
89.04 kJ/mol
Rank: 54 (Overall)
Zinc Metal
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9.6.2 Enthalpy of Fusion
Tungsten Metal
2.19 kJ/mol
Rank: 62 (Overall)
2.59 kJ/mol
Rank: 59 (Overall)
Cesium Metal
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9.6.3 Enthalpy of Atomization
Tungsten Metal
82.00 kJ/mol
Rank: 59 (Overall)
108.40 kJ/mol
Rank: 57 (Overall)
Mercury Metal
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9.7 Standard Molar Entropy
Protactinium Me..
76.80 J/mol.K
Rank: 5 (Overall)
51.30 J/mol.K
Rank: 28 (Overall)
Beryllium Metal
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