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Berkelium
Berkelium

Einsteinium
Einsteinium



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Berkelium
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Berkelium vs Einsteinium

1 Periodic Table
1.1 Symbol
Bk
Es
1.2 Group Number
NANA
Gadolinium
0 17
1.3 Period Number
77
Lithium
2 7
1.4 Block
f block
f block
1.5 Element Family
Actinide
Actinide
1.6 CAS Number
74404067429927
Aluminium
7429905 54386242
1.7 Space Group Name
P63/mmc
Not Available
1.8 Space Group Number
194.00NA
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • X-ray Diffraction- different compounds of Berkelium metals are identified using it.
    Commercial uses of Berkelium metal are not yet discovered.
  • Einsteinium is the transuranic element found in US.
  • Only 0.01 mg of Einsteinium was synthesized in 1961.
2.2 Sources
Bombarding Americium with Alpha Particles.
Made by Bombarding Uranium with Neutrons
2.3 History
2.3.1 Who Discovered
Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory
2.3.2 Discovery
In 1949
In 1952
2.4 Abundance
2.4.1 Abundance In Universe
NANA
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~-9999 %~-9999 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
NANA
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
NANA
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
NANA
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
NANA
Radium
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • This metal is very rare and has no commercial uses.
  • Currently known uses of Einsteinium metal are limited to research purpose only.
3.1.1 Industrial Uses
NA
NA
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
NA
Alloys, Nuclear Research, Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Unknown
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
0 1970
3.2.4 In Bone
0.00 p.p.m.0.00 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
986.00 °C860.00 °C
Francium
27 3410
4.2 Boiling Point
2,627.00 °C996.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silver
Silver
4.3.3 Luster
Metallic
NA
4.4 Hardness
4.4.1 Mohs Hardness
NANA
Cesium
0.2 8.5
4.4.2 Brinell Hardness
NANA
Cesium
0.14 3490
4.4.3 Vickers Hardness
NANA
Palladium
121 3430
4.5 Speed of Sound
NANA
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum
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
Bk
Es
5.2 Isotopes
5.2.1 Known Isotopes
1416
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.301.54
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
NANA
Cesium
0.22 2.56
1.1.1 Allred Rochow Electronegativity
1.201.20
Cesium
0.86 1.82
1.2.4 Mulliken-Jaffe Electronegativity
NANA
Cesium
0.62 2.48
1.2.6 Allen Electronegativity
2.70NA
Cesium
0.659 2.7
1.3 Electropositivity
1.3.1 Pauling Electropositivity
2.702.70
Gold
1.46 3.3
1.4 Ionization Energies
1.4.1 1st Energy Level
601.00 kJ/mol619.00 kJ/mol
Cesium
375.7 26130
1.4.2 2nd Energy Level
1,186.00 kJ/mol1,216.00 kJ/mol
Ruthenium
710.2162 28750
1.4.3 3rd Energy Level
2,152.00 kJ/mol2,334.00 kJ/mol
Osmium
1600 34230
1.4.4 4th Energy Level
3,434.00 kJ/mol3,734.00 kJ/mol
Thorium
2780 37066
1.4.5 5th Energy Level
NANA
Dubnium
4305.2 97510
1.4.6 6th Energy Level
NANA
Seaborgium
5715.8 105800
1.4.7 7th Energy level
NANA
Bohrium
7226.8 114300
1.4.8 8th Energy Level
NANA
Hassium
8857.4 125300
1.4.9 9th Energy Level
NANA
Yttrium
14110 134700
1.4.10 10th Energy Level
NANA
Strontium
17100 144300
1.4.11 11th Energy Level
NANA
Yttrium
19900 169988
1.4.12 12th Energy Level
NANA
Molybdenum
22219 189368
1.4.13 13th Energy Level
NANA
Molybdenum
26930 76015
1.4.14 14th Energy Level
NANA
Molybdenum
29196 86450
1.4.15 15th Energy Level
NANA
Manganese
41987 97510
1.4.16 16th Energy Level
NANA
Iron
47206 109480
1.4.17 17th Energy Level
NANA
Cobalt
52737 122200
1.4.18 18th Energy Level
NANA
Nickel
58570 134810
1.4.19 19th Energy Level
NANA
Copper
64702 148700
1.4.20 20th Energy Level
NANA
Molybdenum
80400 171200
1.4.21 21st Energy Level
NANA
Molybdenum
87000 179100
1.4.22 22nd Energy Level
NANA
Molybdenum
93400 184900
1.4.23 23rd Energy Level
NANA
Molybdenum
98420 198800
1.4.24 24th Energy Level
NANA
Molybdenum
104400 195200
1.4.25 25th Energy Level
NANA
Molybdenum
121900 121900
1.4.26 26th Energy Level
NANA
Molybdenum
127700 127700
1.4.27 27th Energy Level
NANA
Molybdenum
133800 133800
1.4.28 28th Energy Level
NANA
Molybdenum
139800 139800
1.4.29 29th Energy Level
NANA
Molybdenum
148100 148100
1.4.30 30th Energy Level
NANA
Molybdenum
154500 154500
1.5 Electrochemical Equivalent
3.07 g/amp-hr4.74 g/amp-hr
Beryllium
0.16812 8.3209
1.6 Electron Work Function
NANA
Cesium
2.14 5.65
1.7 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity
2 Atomic
2.1 Atomic Number
9799
Lithium
3 117
2.2 Electron Configuration
[Rn] 5f9 7s2
[Rn] 5f11 7s2
2.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Face Centered Cubic (FCC)
2.3.1 Crystal Lattice
2.4 Atom
2.4.1 Number of Protons
9799
Lithium
3 117
2.4.2 Number of Neutrons
150153
Lithium
4 184
2.4.3 Number of Electrons
9799
Lithium
3 117
2.5 Radius of an Atom
2.5.1 Atomic Radius
170.00 pm186.00 pm
Beryllium
112 265
2.5.2 Covalent Radius
NANA
Beryllium
96 260
2.5.3 Van der Waals Radius
NANA
Zinc
139 348
2.6 Atomic Weight
247.00 amu252.00 amu
Lithium
6.94 294
2.7 Atomic Volume
NANA
Manganese
1.39 71.07
2.8 Adjacent Atomic Numbers
2.8.1 Previous Element
2.8.2 Next Element
2.9 Valence Electron Potential
45.50 (-eV)NA
Francium
8 392.42
2.10 Lattice Constant
341.60 pmNA
Beryllium
228.58 891.25
2.11 Lattice Angles
π/2, π/2, 2 π/3
NA
2.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
3 Mechanical
3.1 Density
3.1.1 Density At Room Temperature
14.78 g/cm38.84 g/cm3
Lithium
0.534 40.7
3.1.2 Density When Liquid (at m.p.)
13.25 g/cm3NA
Lithium
0.512 20
3.2 Tensile Strength
NANA
Indium
2.5 11000
3.3 Viscosity
NANA
Mercury
0.001526 0.001526
3.4 Vapor Pressure
3.4.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
3.4.2 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
3.5 Elasticity properties
3.5.1 Shear Modulus
NANA
Potassium
1.3 222
3.5.2 Bulk Modulus
NANA
Cesium
1.6 462
3.5.3 Young's Modulus
NANA
Cesium
1.7 528
3.6 Poisson Ratio
NANA
Beryllium
0.032 0.47
3.7 Other Mechanical Properties
NA
NA
4 Magnetic
4.1 Magnetic Characteristics
4.1.1 Specific Gravity
14.00NA
Lithium
0.53 4500
4.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
4.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
4.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
4.2 Electrical Properties
4.2.1 Electrical Property
Conductor
Unknown
4.2.2 Resistivity
NANA
Thallium
0.18 961
4.2.3 Electrical Conductivity
NANA
Plutonium
0.00666 0.63
4.2.4 Electron Affinity
NANA
Mercury
0 222.8
5 Thermal
5.1 Specific Heat
NANA
Americium
0.11 3.6
5.2 Molar Heat Capacity
NANA
Beryllium
16.443 62.7
5.3 Thermal Conductivity
10.00 W/m·KNA
Neptunium
6.3 429
5.4 Critical Temperature
NANA
Ytterbium
26.3 3223
5.5 Thermal Expansion
NANA
Tungsten
4.5 97
5.6 Enthalpy
5.6.1 Enthalpy of Vaporization
NANA
Zinc
7.32 799.1
5.6.2 Enthalpy of Fusion
NANA
Cesium
2.1 35.23
5.6.3 Enthalpy of Atomization
NANA
Mercury
61.5 837
5.7 Standard Molar Entropy
NANA
Beryllium
9.5 198.1