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Cesium
Cesium

Curium
Curium



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Cesium vs Curium

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1 Periodic Table
1.2 Symbol
Cs
Cm
1.3 Group Number
1NA
Gadolinium
0 17
1.6 Period Number
67
Lithium
2 7
2.5 Block
s block
f block
2.6 Element Family
Alkali
Actinide
2.7 CAS Number
74404627440519
Aluminium
7429905 54386242
1.3 Space Group Name
Im_ 3m
Not Available
1.4 Space Group Number
229.00NA
Plutonium
11 229
2 Facts
2.1 Interesting Facts
Not Available
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
2.2 Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Bombarding Plutonium with Helium Ions
2.3 History
2.3.1 Who Discovered
Robert Bunsen and Gustav Kirchhoff
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
2.3.3 Discovery
In 1860
In 1944
2.4 Abundance
2.4.1 Abundance In Universe
8 * 10-8 %NA
Thallium
5E-09 0.11
2.6.1 Abundance In Sun
~0.0000008 %~-9999 %
Beryllium
1E-08 0.1
2.12.1 Abundance In Meteorites
0.00 %NA
Gold
1.7E-07 22
2.15.2 Abundance In Earth's Crust
0.00 %NA
Radium
9.9E-12 8.1
3.4.2 Abundance In Oceans
0.00 %NA
Protactinium
2E-23 1.1
5.4.3 Abundance In Humans
0.00 %NA
Radium
1E-13 1.4
6 Uses
6.1 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.
  • Curium metal is used to provide power to electrical equipment for space missions.
6.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
NA
6.1.2 Medical Uses
NA
NA
6.1.3 Other Uses
Alloys
Research Purposes
6.2 Biological Properties
6.2.1 Toxicity
Mildly Toxic
Unknown
6.2.2 Present in Human Body
6.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium
0 1970
6.3.1 In Bone
0.05 p.p.m.0.00 p.p.m.
Plutonium
0 170000
8 Physical
8.1 Melting Point
28.50 °C1,340.00 °C
Francium
27 3410
8.3 Boiling Point
678.40 °C3,110.00 °C
Flerovium
147 5660
8.5 Appearance
8.5.1 Physical State
Solid
Solid
8.6.2 Color
Silvery Gold
Silver
8.6.3 Luster
NA
Metallic
8.7 Hardness
8.7.1 Mohs Hardness
0.20NA
Tin
0.2 8.5
8.7.4 Brinell Hardness
0.14 MPaNA
Palladium
0.14 3490
9.2.4 Vickers Hardness
NANA
Palladium
121 3430
10.3 Speed of Sound
NANA
Thallium
818 16200
11.3 Optical Properties
11.3.1 Refractive Index
NANA
Mercury
1.000933 1.7229
12.1.1 Reflectivity
NANA
Molybdenum
58 97
12.3 Allotropes
12.3.1 α Allotropes
Not Available
Not Available
12.4.2 β Allotropes
Not Available
Not Available
12.4.3 γ Allotropes
Not Available
Not Available
13 Chemical
13.1 Chemical Formula
Cs
Cm
13.2 Isotopes
13.2.1 Known Isotopes
3615
Tennessine
0 38
13.5 Electronegativity
13.5.1 Pauling Electronegativity
0.791.30
Francium
0.7 2.54
14.4.2 Sanderson Electronegativity
0.22NA
Sodium
0.22 2.56
14.7.2 Allred Rochow Electronegativity
0.861.20
Potassium
0.86 1.82
14.7.3 Mulliken-Jaffe Electronegativity
0.62NA
Sodium
0.62 2.48
14.7.6 Allen Electronegativity
0.66NA
Francium
0.659 2.7
14.8 Electropositivity
14.8.1 Pauling Electropositivity
3.212.70
Gold
1.46 3.3
14.10 Ionization Energies
14.10.1 1st Energy Level
375.70 kJ/mol581.00 kJ/mol
Palladium
375.7 26130
14.10.2 2nd Energy Level
2,234.30 kJ/mol1,196.00 kJ/mol
Ruthenium
710.2162 28750
14.12.2 3rd Energy Level
3,400.00 kJ/mol2,026.00 kJ/mol
Osmium
1600 34230
14.12.5 4th Energy Level
NA3,550.00 kJ/mol
Thorium
2780 37066
15.3.3 5th Energy Level
NANA
Dubnium
4305.2 97510
16.2.2 6th Energy Level
NANA
Seaborgium
5715.8 105800
16.3.3 7th Energy level
NANA
Bohrium
7226.8 114300
16.3.6 8th Energy Level
NANA
Hassium
8857.4 125300
16.4.2 9th Energy Level
NANA
Yttrium
14110 134700
16.4.6 10th Energy Level
NANA
Strontium
17100 144300
16.4.9 11th Energy Level
NANA
Yttrium
19900 169988
16.4.12 12th Energy Level
NANA
Molybdenum
22219 189368
16.4.16 13th Energy Level
NANA
Molybdenum
26930 76015
16.5.2 14th Energy Level
NANA
Molybdenum
29196 86450
16.6.2 15th Energy Level
NANA
Manganese
41987 97510
16.7.4 16th Energy Level
NANA
Iron
47206 109480
16.8.2 17th Energy Level
NANA
Cobalt
52737 122200
16.8.6 18th Energy Level
NANA
Nickel
58570 134810
16.8.10 19th Energy Level
NANA
Copper
64702 148700
16.8.11 20th Energy Level
NANA
Molybdenum
80400 171200
16.8.15 21st Energy Level
NANA
Molybdenum
87000 179100
16.8.17 22nd Energy Level
NANA
Molybdenum
93400 184900
16.8.21 23rd Energy Level
NANA
Molybdenum
98420 198800
16.8.24 24th Energy Level
NANA
Molybdenum
104400 195200
16.8.28 25th Energy Level
NANA
Molybdenum
121900 121900
16.8.31 26th Energy Level
NANA
Molybdenum
127700 127700
16.8.34 27th Energy Level
NANA
Molybdenum
133800 133800
16.8.37 28th Energy Level
NANA
Molybdenum
139800 139800
16.8.41 29th Energy Level
NANA
Molybdenum
148100 148100
16.8.44 30th Energy Level
NANA
Molybdenum
154500 154500
16.9 Electrochemical Equivalent
4.96 g/amp-hr3.07 g/amp-hr
Beryllium
0.16812 8.3209
16.10 Electron Work Function
2.14 eVNA
Potassium
2.14 5.65
16.11 Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes
17 Atomic
17.1 Atomic Number
5596
Lithium
3 117
17.2 Electron Configuration
[Xe] 6s1
[Rn] 5f7 6d1 7s2
17.3 Crystal Structure
Body Centered Cubic (BCC)
Double Hexagonal Close Packed (DHCP)
17.3.1 Crystal Lattice
17.4 Atom
17.4.1 Number of Protons
5596
Lithium
3 117
17.4.12 Number of Neutrons
78151
Lithium
4 184
17.4.21 Number of Electrons
5596
Lithium
3 117
17.6 Radius of an Atom
17.6.1 Atomic Radius
265.00 pm174.00 pm
Beryllium
112 265
17.7.1 Covalent Radius
244.00 pm169.00 pm
Beryllium
96 260
17.9.1 Van der Waals Radius
343.00 pm200.00 pm
Zinc
139 348
19.2 Atomic Weight
132.91 amu247.00 amu
Lithium
6.94 294
20.2 Atomic Volume
71.07 cm3/mol18.28 cm3/mol
Manganese
1.39 71.07
20.3 Adjacent Atomic Numbers
20.3.1 Previous Element
20.3.2 Next Element
20.4 Valence Electron Potential
8.62 (-eV)44.50 (-eV)
Francium
8 392.42
20.9 Lattice Constant
614.10 pmNA
Beryllium
228.58 891.25
20.11 Lattice Angles
π/2, π/2, π/2
NA
20.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
21 Mechanical
21.1 Density
21.1.1 Density At Room Temperature
1.93 g/cm313.51 g/cm3
Lithium
0.534 40.7
21.6.1 Density When Liquid (at m.p.)
1.84 g/cm313.85 g/cm3
Lithium
0.512 20
21.14 Tensile Strength
NANA
Indium
2.5 11000
22.4 Viscosity
NANA
Mercury
0.001526 0.001526
23.2 Vapor Pressure
23.2.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
23.4.1 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
23.9 Elasticity properties
23.9.1 Shear Modulus
NANA
Potassium
1.3 222
23.12.3 Bulk Modulus
1.60 GPaNA
Tin
1.6 462
23.15.2 Young's Modulus
1.70 GPaNA
Palladium
1.7 528
23.17 Poisson Ratio
NANA
Beryllium
0.032 0.47
24.2 Other Mechanical Properties
Ductile
Unknown
25 Magnetic
25.1 Magnetic Characteristics
25.1.1 Specific Gravity
1.8713.51
Lithium
0.53 4500
26.1.3 Magnetic Ordering
Paramagnetic
Antiferromagnetic
26.1.4 Permeability
NANA
Bismuth
1.25643E-06 0.0063
27.2.4 Susceptibility
NANA
Bismuth
-0.000166 200000
27.4 Electrical Properties
27.4.1 Electrical Property
Semiconductor
Unknown
27.4.3 Resistivity
205.00 nΩ·m1.25 nΩ·m
Thallium
0.18 961
27.4.6 Electrical Conductivity
0.05 106/cm ΩNA
Plutonium
0.00666 0.63
29.3.1 Electron Affinity
45.50 kJ/molNA
Mercury
0 222.8
30 Thermal
30.1 Specific Heat
0.24 J/(kg K)NA
Americium
0.11 3.6
30.4 Molar Heat Capacity
32.21 J/mol·KNA
Beryllium
16.443 62.7
30.8 Thermal Conductivity
35.90 W/m·KNA
Neptunium
6.3 429
30.11 Critical Temperature
1,938.00 KNA
Ytterbium
26.3 3223
30.12 Thermal Expansion
97.00 µm/(m·K)NA
Tungsten
4.5 97
30.15 Enthalpy
30.15.1 Enthalpy of Vaporization
65.90 kJ/molNA
Zinc
7.32 799.1
30.16.1 Enthalpy of Fusion
2.10 kJ/mol15.00 kJ/mol
Tin
2.1 35.23
31.1.2 Enthalpy of Atomization
78.20 kJ/molNA
Mercury
61.5 837
31.2 Standard Molar Entropy
85.20 J/mol.KNA
Beryllium
9.5 198.1