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Cesium
Cesium

Europium
Europium



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Cesium vs Europium

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1 Periodic Table
1.1 Symbol
Cs
Eu
1.2 Group Number
1NA
Gadolinium
0 17
1.3 Period Number
66
Lithium
2 7
1.4 Block
s block
f block
1.5 Element Family
Alkali
Lanthanide
1.6 CAS Number
74404627440531
Aluminium
7429905 54386242
1.3 Space Group Name
Im_ 3m
Im_ 3m
1.4 Space Group Number
229.00229.00
Plutonium
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
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.4.1 Who Discovered
Robert Bunsen and Gustav Kirchhoff
Eugène-Anatole Demarçay
2.4.2 Discovery
In 1860
In 1896
2.5 Abundance
2.5.1 Abundance In Universe
8 * 10-8 %5 * 10-8 %
Thallium
5E-09 0.11
2.5.2 Abundance In Sun
~0.0000008 %~0.00000005 %
Beryllium
1E-08 0.1
2.8.1 Abundance In Meteorites
0.00 %0.00 %
Gold
1.7E-07 22
2.10.1 Abundance In Earth's Crust
0.00 %0.00 %
Radium
9.9E-12 8.1
3.1.1 Abundance In Oceans
0.00 %0.00 %
Protactinium
2E-23 1.1
3.4.2 Abundance In Humans
0.00 %NA
Radium
1E-13 1.4
4 Uses
4.1 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.
  • Europium metals main uses is in the printing of euro banknotes. These notes glow red under UV light.
  • It is used in low energy light bulbs.
4.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
Chemical Industry
4.1.2 Medical Uses
NA
NA
4.1.3 Other Uses
Alloys
Alloys
4.2 Biological Properties
4.2.1 Toxicity
Mildly Toxic
Non Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
0.00 Blood/mg dm-3NA
Plutonium
0 1970
4.2.5 In Bone
0.05 p.p.m.NA
Plutonium
0 170000
5 Physical
5.1 Melting Point
28.50 °C822.00 °C
Francium
27 3410
5.2 Boiling Point
678.40 °C1,597.00 °C
Flerovium
147 5660
5.3 Appearance
5.3.1 Physical State
Solid
Solid
5.3.2 Color
Silvery Gold
Silvery White
5.3.3 Luster
NA
Lustrous
5.4 Hardness
5.4.1 Mohs Hardness
0.20NA
Tin
0.2 8.5
5.4.3 Brinell Hardness
0.14 MPaNA
Palladium
0.14 3490
6.2.4 Vickers Hardness
NA167.00 MPa
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
7.4 Allotropes
7.4.1 α Allotropes
Not Available
Not Available
7.4.2 β Allotropes
Not Available
Not Available
7.4.3 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
Cs
Eu
8.2 Isotopes
8.2.1 Known Isotopes
3631
Tennessine
0 38
8.4 Electronegativity
8.4.1 Pauling Electronegativity
0.791.20
Francium
0.7 2.54
8.5.2 Sanderson Electronegativity
0.221.01
Sodium
0.22 2.56
8.5.4 Allred Rochow Electronegativity
0.86NA
Potassium
0.86 1.82
8.5.5 Mulliken-Jaffe Electronegativity
0.62NA
Sodium
0.62 2.48
8.5.7 Allen Electronegativity
0.66NA
Francium
0.659 2.7
8.7 Electropositivity
8.7.1 Pauling Electropositivity
3.21NA
Gold
1.46 3.3
8.8 Ionization Energies
8.8.1 1st Energy Level
375.70 kJ/mol547.10 kJ/mol
Palladium
375.7 26130
8.9.2 2nd Energy Level
2,234.30 kJ/mol1,085.00 kJ/mol
Ruthenium
710.2162 28750
8.9.4 3rd Energy Level
3,400.00 kJ/mol2,404.00 kJ/mol
Osmium
1600 34230
9.2.2 4th Energy Level
NA4,120.00 kJ/mol
Thorium
2780 37066
9.2.3 5th Energy Level
NANA
Dubnium
4305.2 97510
9.3.2 6th Energy Level
NANA
Seaborgium
5715.8 105800
9.3.4 7th Energy level
NANA
Bohrium
7226.8 114300
9.3.5 8th Energy Level
NANA
Hassium
8857.4 125300
9.3.7 9th Energy Level
NANA
Yttrium
14110 134700
9.3.9 10th Energy Level
NANA
Strontium
17100 144300
9.3.11 11th Energy Level
NANA
Yttrium
19900 169988
9.3.12 12th Energy Level
NANA
Molybdenum
22219 189368
9.4.2 13th Energy Level
NANA
Molybdenum
26930 76015
9.5.2 14th Energy Level
NANA
Molybdenum
29196 86450
9.5.4 15th Energy Level
NANA
Manganese
41987 97510
9.5.6 16th Energy Level
NANA
Iron
47206 109480
9.5.8 17th Energy Level
NANA
Cobalt
52737 122200
9.5.9 18th Energy Level
NANA
Nickel
58570 134810
9.5.11 19th Energy Level
NANA
Copper
64702 148700
9.5.13 20th Energy Level
NANA
Molybdenum
80400 171200
9.5.15 21st Energy Level
NANA
Molybdenum
87000 179100
9.5.16 22nd Energy Level
NANA
Molybdenum
93400 184900
9.5.18 23rd Energy Level
NANA
Molybdenum
98420 198800
9.5.20 24th Energy Level
NANA
Molybdenum
104400 195200
9.5.22 25th Energy Level
NANA
Molybdenum
121900 121900
9.5.23 26th Energy Level
NANA
Molybdenum
127700 127700
9.5.25 27th Energy Level
NANA
Molybdenum
133800 133800
9.5.26 28th Energy Level
NANA
Molybdenum
139800 139800
9.5.28 29th Energy Level
NANA
Molybdenum
148100 148100
9.5.29 30th Energy Level
NANA
Molybdenum
154500 154500
9.6 Electrochemical Equivalent
4.96 g/amp-hr1.89 g/amp-hr
Beryllium
0.16812 8.3209
9.7 Electron Work Function
2.14 eV2.50 eV
Potassium
2.14 5.65
9.8 Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Solubility
10 Atomic
10.1 Atomic Number
5563
Lithium
3 117
10.2 Electron Configuration
[Xe] 6s1
[Xe] 4f7 6s2
10.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
5563
Lithium
3 117
10.4.4 Number of Neutrons
7889
Lithium
4 184
10.4.6 Number of Electrons
5563
Lithium
3 117
10.5 Radius of an Atom
10.5.1 Atomic Radius
265.00 pm180.00 pm
Beryllium
112 265
10.5.2 Covalent Radius
244.00 pm198.00 pm
Beryllium
96 260
10.5.5 Van der Waals Radius
343.00 pm233.00 pm
Zinc
139 348
10.6 Atomic Weight
132.91 amu151.96 amu
Lithium
6.94 294
10.7 Atomic Volume
71.07 cm3/mol28.90 cm3/mol
Manganese
1.39 71.07
10.8 Adjacent Atomic Numbers
10.8.1 Previous Element
10.8.2 Next Element
10.9 Valence Electron Potential
8.62 (-eV)45.60 (-eV)
Francium
8 392.42
10.10 Lattice Constant
614.10 pm458.10 pm
Beryllium
228.58 891.25
10.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
10.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
1.93 g/cm35.26 g/cm3
Lithium
0.534 40.7
11.1.4 Density When Liquid (at m.p.)
1.84 g/cm35.13 g/cm3
Lithium
0.512 20
11.2 Tensile Strength
NA120.00 MPa
Indium
2.5 11000
11.4 Viscosity
NANA
Mercury
0.001526 0.001526
11.6 Vapor Pressure
11.6.1 Vapor Pressure at 1000 K
NA19.40 (Pa)
Cerium
2.47E-11 121
11.6.2 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
12.2 Elasticity properties
12.2.1 Shear Modulus
NA7.90 GPa
Potassium
1.3 222
12.5.2 Bulk Modulus
1.60 GPa8.30 GPa
Tin
1.6 462
12.5.3 Young's Modulus
1.70 GPa18.20 GPa
Palladium
1.7 528
12.6 Poisson Ratio
NA0.15
Beryllium
0.032 0.47
12.7 Other Mechanical Properties
Ductile
Ductile
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
1.875.24
Lithium
0.53 4500
13.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
13.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
13.2.2 Susceptibility
NANA
Bismuth
-0.000166 200000
13.3 Electrical Properties
13.3.1 Electrical Property
Semiconductor
Conductor
13.3.3 Resistivity
205.00 nΩ·m0.90 nΩ·m
Thallium
0.18 961
13.3.5 Electrical Conductivity
0.05 106/cm Ω0.01 106/cm Ω
Plutonium
0.00666 0.63
13.4.1 Electron Affinity
45.50 kJ/mol50.00 kJ/mol
Mercury
0 222.8
14 Thermal
14.1 Specific Heat
0.24 J/(kg K)0.18 J/(kg K)
Americium
0.11 3.6
14.2 Molar Heat Capacity
32.21 J/mol·K27.66 J/mol·K
Beryllium
16.443 62.7
14.5 Thermal Conductivity
35.90 W/m·K13.90 W/m·K
Neptunium
6.3 429
14.7 Critical Temperature
1,938.00 KNA
Ytterbium
26.3 3223
14.10 Thermal Expansion
97.00 µm/(m·K)35.00 µm/(m·K)
Tungsten
4.5 97
15.2 Enthalpy
15.2.1 Enthalpy of Vaporization
65.90 kJ/mol143.50 kJ/mol
Zinc
7.32 799.1
15.2.3 Enthalpy of Fusion
2.10 kJ/mol9.21 kJ/mol
Tin
2.1 35.23
15.2.4 Enthalpy of Atomization
78.20 kJ/mol180.00 kJ/mol
Mercury
61.5 837
15.4 Standard Molar Entropy
85.20 J/mol.K77.80 J/mol.K
Beryllium
9.5 198.1