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Cesium
Cesium

Actinium
Actinium



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Actinium

Cesium Actinium Comparison

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1 Periodic Table
1.1 Symbol
Cs
Ac
1.2 Group Number
1NA
Gadolinium Metal
0 17
1.3 Period Number
67
Lithium Metal
2 7
1.4 Block
s block
f block
1.5 Element Family
Alkali
Actinide
1.6 CAS Number
74404627440348
Aluminium Metal
7429905 54386242
1.7 Space Group Name
Im_ 3m
Fm_ 3m
1.8 Space Group Number
229.00225.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
Not Available
Not Available
2.2 Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Obtained by Treating Radium with Neutrons, Ores of metals
2.3 History
2.3.1 Who Discovered
Robert Bunsen and Gustav Kirchhoff
Friedrich Oskar Giesel
2.3.2 Discovery
In 1860
In 1902
2.4 Abundance
2.4.1 Abundance In Universe
8 * 10-8 %NA
Thallium Metal
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000008 %~-9999 %
Beryllium Metal
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %NA
Gold Metal
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %NA
Radium Metal
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %NA
Protactinium Metal
2E-23 1.1
2.4.6 Abundance In Humans
0.00 %NA
Radium Metal
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • The most common use of cesium metal is as a drilling fluid. It is also used in optical glass manufacturing.
  • In vacuum tubes and radiation monitor equipment this metal is used as a catalyst promoter.
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
3.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys
Alloys, Nuclear Research, Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Mildly Toxic
Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium Metal
0 1970
3.2.4 In Bone
0.05 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
28.50 °C1,227.00 °C
Francium Metal
27 3410
4.2 Boiling Point
678.40 °C3,200.00 °C
Flerovium Metal
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery Gold
Silvery White
4.3.3 Luster
NA
NA
4.4 Hardness
4.4.1 Mohs Hardness
0.20NA
Tin
0.2 8.5
4.4.2 Brinell Hardness
0.14 MPaNA
Palladium
0.14 3490
4.4.3 Vickers Hardness
NANA
Palladium Metal
121 3430
4.5 Speed of Sound
NANA
Thallium Metal
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum Metal
58 97
4.7 Allotropes
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
Cs
Ac
5.2 Isotopes
5.2.1 Known Isotopes
3629
Tennessine Metal
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
0.791.10
Francium Metal
0.7 2.54
5.3.2 Sanderson Electronegativity
0.22NA
Sodium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
0.861.00
Potassium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
0.62NA
Sodium
0.62 2.48
5.3.5 Allen Electronegativity
0.66NA
Francium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
3.212.90
Gold Metal
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
375.70 kJ/mol499.00 kJ/mol
Palladium
375.7 26130
5.5.2 2nd Energy Level
2,234.30 kJ/mol1,170.00 kJ/mol
Ruthenium Metal
710.2162 28750
5.5.3 3rd Energy Level
3,400.00 kJ/mol1,900.00 kJ/mol
Osmium Metal
1600 34230
5.5.4 4th Energy Level
NA4,700.00 kJ/mol
Thorium Metal
2780 37066
5.5.5 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
5.5.6 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
5.5.7 7th Energy level
NANA
Bohrium Metal
7226.8 114300
5.5.8 8th Energy Level
NANA
Hassium Metal
8857.4 125300
5.5.9 9th Energy Level
NANA
Yttrium Metal
14110 134700
5.5.10 10th Energy Level
NANA
Strontium Metal
17100 144300
5.5.11 11th Energy Level
NANA
Yttrium Metal
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum Metal
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum Metal
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum Metal
29196 86450
5.5.15 15th Energy Level
NANA
Manganese Metal
41987 97510
5.5.16 16th Energy Level
NANA
Iron Metal
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt Metal
52737 122200
5.5.18 18th Energy Level
NANA
Nickel Metal
58570 134810
5.5.19 19th Energy Level
NANA
Copper Metal
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum Metal
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum Metal
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum Metal
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum Metal
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum Metal
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum Metal
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum Metal
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum Metal
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum Metal
154500 154500
5.6 Electrochemical Equivalent
4.96 g/amp-hr2.82 g/amp-hr
Beryllium Metal
0.16812 8.3209
5.7 Electron Work Function
2.14 eVNA
Potassium
2.14 5.65
5.8 Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
6 Atomic
6.1 Atomic Number
5589
Lithium Metal
3 117
6.2 Electron Configuration
[Xe] 6s1
[Rn] 6d1 7s2
6.3 Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
5589
Lithium Metal
3 117
6.4.2 Number of Neutrons
78138
Lithium Metal
4 184
6.4.3 Number of Electrons
5589
Lithium Metal
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
265.00 pm195.00 pm
Beryllium Metal
112 265
6.5.2 Covalent Radius
244.00 pmNA
Beryllium Metal
96 260
6.5.3 Van der Waals Radius
343.00 pmNA
Zinc Metal
139 348
6.6 Atomic Weight
132.91 amu227.00 amu
Lithium Metal
6.94 294
6.7 Atomic Volume
71.07 cm3/mol22.54 cm3/mol
Manganese Metal
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
8.62 (-eV)38.60 (-eV)
Francium Metal
8 392.42
6.10 Lattice Constant
614.10 pm567.00 pm
Beryllium Metal
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
1.93 g/cm310.00 g/cm3
Lithium Metal
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
1.84 g/cm3NA
Lithium Metal
0.512 20
7.2 Tensile Strength
NANA
Indium Metal
2.5 11000
7.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NANA
Tungsten Metal
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
NANA
Potassium Metal
1.3 222
7.5.2 Bulk Modulus
1.60 GPaNA
Tin
1.6 462
7.5.3 Young's Modulus
1.70 GPaNA
Palladium
1.7 528
7.6 Poisson Ratio
NANA
Beryllium Metal
0.032 0.47
7.7 Other Mechanical Properties
Ductile
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
1.8710.07
Lithium Metal
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
8.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Semiconductor
Unknown
8.2.2 Resistivity
205.00 nΩ·mNA
Thallium Metal
0.18 961
8.2.3 Electrical Conductivity
0.05 106/cm ΩNA
Plutonium Metal
0.00666 0.63
8.2.4 Electron Affinity
45.50 kJ/molNA
Mercury Metal
0 222.8
9 Thermal
9.1 Specific Heat
0.24 J/(kg K)0.12 J/(kg K)
Americium Metal
0.11 3.6
9.2 Molar Heat Capacity
32.21 J/mol·K27.20 J/mol·K
Beryllium Metal
16.443 62.7
9.3 Thermal Conductivity
35.90 W/m·K12.00 W/m·K
Neptunium Metal
6.3 429
9.4 Critical Temperature
1,938.00 KNA
Ytterbium Metal
26.3 3223
9.5 Thermal Expansion
97.00 µm/(m·K)NA
Tungsten Metal
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
65.90 kJ/molNA
Zinc Metal
7.32 799.1
9.6.2 Enthalpy of Fusion
2.10 kJ/molNA
Tin
2.1 35.23
9.6.3 Enthalpy of Atomization
78.20 kJ/mol301.00 kJ/mol
Mercury Metal
61.5 837
9.7 Standard Molar Entropy
85.20 J/mol.K56.50 J/mol.K
Beryllium Metal
9.5 198.1