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Cesium
Cesium

Roentgenium
Roentgenium



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Cesium vs Roentgenium

1 Periodic Table
1.1 Symbol
Cs
Rg
1.2 Group Number
111
Gadolinium
0 17
1.5 Period Number
67
Lithium
2 7
1.7 Block
s block
d block
1.8 Element Family
Alkali
Unknown
1.9 CAS Number
744046254386242
Aluminium
7429905 54386242
1.12 Space Group Name
Im_ 3m
Not Available
1.13 Space Group Number
229.00194.00
Plutonium
11 229
3 Facts
3.1 Interesting Facts
Not Available
Not Available
3.2 Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Synthetically Produced
3.3 History
3.3.1 Who Discovered
Robert Bunsen and Gustav Kirchhoff
Gesellschaft für Schwerionenforschung
3.3.2 Discovery
In 1860
In 1994
3.4 Abundance
3.4.1 Abundance In Universe
8 * 10-8 %NA
Thallium
5E-09 0.11
1.2.2 Abundance In Sun
~0.0000008 %~-9999 %
Beryllium
1E-08 0.1
1.4.1 Abundance In Meteorites
0.00 %NA
Gold
1.7E-07 22
1.9.2 Abundance In Earth's Crust
0.00 %NA
Radium
9.9E-12 8.1
1.11.1 Abundance In Oceans
0.00 %NA
Protactinium
2E-23 1.1
1.12.2 Abundance In Humans
0.00 %NA
Radium
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.
  • Currently known uses of Roentgenium metal are limited to research purpose only.
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
Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Mildly Toxic
Unknown
3.2.2 Present in Human Body
3.2.4 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium
0 1970
3.2.6 In Bone
0.05 p.p.m.0.00 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
28.50 °CNA
Francium
27 3410
4.3 Boiling Point
678.40 °CNA
Flerovium
147 5660
5.2 Appearance
5.2.1 Physical State
Solid
Solid
5.2.2 Color
Silvery Gold
Silver
5.2.3 Luster
NA
Unknown Luster
5.3 Hardness
5.3.1 Mohs Hardness
0.20NA
Tin
0.2 8.5
5.3.4 Brinell Hardness
0.14 MPaNA
Palladium
0.14 3490
6.2.4 Vickers Hardness
NANA
Palladium
121 3430
6.3 Speed of Sound
NANA
Thallium
818 16200
7.2 Optical Properties
7.2.1 Refractive Index
NANA
Mercury
1.000933 1.7229
7.2.2 Reflectivity
NANA
Molybdenum
58 97
8.2 Allotropes
8.2.1 α Allotropes
Not Available
Not Available
8.2.2 β Allotropes
Not Available
Not Available
8.2.3 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
Cs
Rg
9.2 Isotopes
9.2.1 Known Isotopes
361
Tennessine
0 38
9.5 Electronegativity
9.5.1 Pauling Electronegativity
0.79NA
Francium
0.7 2.54
9.7.1 Sanderson Electronegativity
0.22NA
Sodium
0.22 2.56
9.8.1 Allred Rochow Electronegativity
0.86NA
Potassium
0.86 1.82
9.8.2 Mulliken-Jaffe Electronegativity
0.62NA
Sodium
0.62 2.48
9.9.1 Allen Electronegativity
0.66NA
Francium
0.659 2.7
9.12 Electropositivity
9.12.1 Pauling Electropositivity
3.21NA
Gold
1.46 3.3
9.14 Ionization Energies
9.14.1 1st Energy Level
375.70 kJ/mol1,022.70 kJ/mol
Palladium
375.7 26130
9.14.3 2nd Energy Level
2,234.30 kJ/mol2,074.40 kJ/mol
Ruthenium
710.2162 28750
10.2.2 3rd Energy Level
3,400.00 kJ/mol3,077.90 kJ/mol
Osmium
1600 34230
10.3.1 4th Energy Level
NA4,052.40 kJ/mol
Thorium
2780 37066
10.4.2 5th Energy Level
NA5,306.70 kJ/mol
Dubnium
4305.2 97510
10.4.4 6th Energy Level
NANA
Seaborgium
5715.8 105800
10.4.6 7th Energy level
NANA
Bohrium
7226.8 114300
10.4.7 8th Energy Level
NANA
Hassium
8857.4 125300
10.4.9 9th Energy Level
NANA
Yttrium
14110 134700
10.4.11 10th Energy Level
NANA
Strontium
17100 144300
10.5.2 11th Energy Level
NANA
Yttrium
19900 169988
10.6.2 12th Energy Level
NANA
Molybdenum
22219 189368
10.6.4 13th Energy Level
NANA
Molybdenum
26930 76015
10.6.6 14th Energy Level
NANA
Molybdenum
29196 86450
10.6.8 15th Energy Level
NANA
Manganese
41987 97510
10.6.9 16th Energy Level
NANA
Iron
47206 109480
10.6.11 17th Energy Level
NANA
Cobalt
52737 122200
10.6.13 18th Energy Level
NANA
Nickel
58570 134810
10.6.15 19th Energy Level
NANA
Copper
64702 148700
10.6.17 20th Energy Level
NANA
Molybdenum
80400 171200
10.6.19 21st Energy Level
NANA
Molybdenum
87000 179100
10.6.20 22nd Energy Level
NANA
Molybdenum
93400 184900
10.6.22 23rd Energy Level
NANA
Molybdenum
98420 198800
10.6.24 24th Energy Level
NANA
Molybdenum
104400 195200
10.6.25 25th Energy Level
NANA
Molybdenum
121900 121900
10.6.27 26th Energy Level
NANA
Molybdenum
127700 127700
10.6.28 27th Energy Level
NANA
Molybdenum
133800 133800
10.6.30 28th Energy Level
NANA
Molybdenum
139800 139800
10.6.31 29th Energy Level
NANA
Molybdenum
148100 148100
10.6.33 30th Energy Level
NANA
Molybdenum
154500 154500
10.7 Electrochemical Equivalent
4.96 g/amp-hrNA
Beryllium
0.16812 8.3209
10.8 Electron Work Function
2.14 eVNA
Potassium
2.14 5.65
10.9 Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility
NA
11 Atomic
11.1 Atomic Number
55111
Lithium
3 117
11.2 Electron Configuration
[Xe] 6s1
[Rn] 5f14 6d9 7s2
11.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
11.3.1 Crystal Lattice
11.4 Atom
11.4.1 Number of Protons
55111
Lithium
3 117
11.4.3 Number of Neutrons
78161
Lithium
4 184
11.4.7 Number of Electrons
55111
Lithium
3 117
11.5 Radius of an Atom
11.5.1 Atomic Radius
265.00 pmNA
Beryllium
112 265
11.5.3 Covalent Radius
244.00 pmNA
Beryllium
96 260
11.5.5 Van der Waals Radius
343.00 pmNA
Zinc
139 348
11.6 Atomic Weight
132.91 amu281.00 amu
Lithium
6.94 294
11.7 Atomic Volume
71.07 cm3/molNA
Manganese
1.39 71.07
11.8 Adjacent Atomic Numbers
11.8.1 Previous Element
11.8.2 Next Element
11.9 Valence Electron Potential
8.62 (-eV)NA
Francium
8 392.42
11.11 Lattice Constant
614.10 pmNA
Beryllium
228.58 891.25
11.13 Lattice Angles
π/2, π/2, π/2
NA
11.14 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
1.93 g/cm328.70 g/cm3
Lithium
0.534 40.7
13.1.1 Density When Liquid (at m.p.)
1.84 g/cm3NA
Lithium
0.512 20
13.5 Tensile Strength
NANA
Indium
2.5 11000
13.6 Viscosity
NANA
Mercury
0.001526 0.001526
13.7 Vapor Pressure
13.7.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
13.7.3 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
13.8 Elasticity properties
13.8.1 Shear Modulus
NANA
Potassium
1.3 222
13.9.3 Bulk Modulus
1.60 GPaNA
Tin
1.6 462
13.9.5 Young's Modulus
1.70 GPaNA
Palladium
1.7 528
13.11 Poisson Ratio
NANA
Beryllium
0.032 0.47
13.13 Other Mechanical Properties
Ductile
Unknown
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
1.87NA
Lithium
0.53 4500
14.1.2 Magnetic Ordering
Paramagnetic
Unknown
14.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
14.3.1 Susceptibility
NANA
Bismuth
-0.000166 200000
14.5 Electrical Properties
14.5.1 Electrical Property
Semiconductor
Unknown
14.5.2 Resistivity
205.00 nΩ·mNA
Thallium
0.18 961
14.7.1 Electrical Conductivity
0.05 106/cm ΩNA
Plutonium
0.00666 0.63
15.1.2 Electron Affinity
45.50 kJ/molNA
Mercury
0 222.8
16 Thermal
16.1 Specific Heat
0.24 J/(kg K)NA
Americium
0.11 3.6
16.3 Molar Heat Capacity
32.21 J/mol·KNA
Beryllium
16.443 62.7
16.6 Thermal Conductivity
35.90 W/m·KNA
Neptunium
6.3 429
16.7 Critical Temperature
1,938.00 KNA
Ytterbium
26.3 3223
16.8 Thermal Expansion
97.00 µm/(m·K)NA
Tungsten
4.5 97
16.10 Enthalpy
16.10.1 Enthalpy of Vaporization
65.90 kJ/molNA
Zinc
7.32 799.1
16.10.3 Enthalpy of Fusion
2.10 kJ/molNA
Tin
2.1 35.23
16.10.5 Enthalpy of Atomization
78.20 kJ/molNA
Mercury
61.5 837
16.12 Standard Molar Entropy
85.20 J/mol.KNA
Beryllium
9.5 198.1