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Rutherfordium
Rutherfordium

Einsteinium
Einsteinium



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Rutherfordium
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Einsteinium

Rutherfordium Einsteinium Comparison

1 Periodic Table
1.1 Symbol
Rf
Es
1.2 Group Number
4NA
0 17
1.3 Period Number
77
2 7
1.4 Block
d block
f block
1.5 Element Family
Transition Metal
Actinide
1.6 CAS Number
538503657429927
7429905 54386242
1.7 Space Group Name
Not Available
Not Available
1.8 Space Group Number
NANA
11 229
2 Facts
2.1 Interesting Facts
  • Rutherfordium does not occur in nature as it is a synthetic element.
  • Till date Rutherfordium metal has 15 radioisotopes created synthetically.
  • Einsteinium is the transuranic element found in US.
  • Only 0.01 mg of Einsteinium was synthesized in 1961.
2.2 Sources
Bombarding Plutonium with Accelerated 113 to 115 MeV Neon Ions, Synthetically Produced
Made by Bombarding Uranium with Neutrons
2.3 History
2.3.1 Who Discovered
Joint Institute for Nuclear Research
Lawrence Berkeley National Laboratory
2.3.2 Discovery
In 1964
In 1952
2.4 Abundance
2.4.1 Abundance In Universe
NANA
5E-09 0.11
2.4.2 Abundance In Sun
~-9999 %~-9999 %
1E-08 0.1
2.4.3 Abundance In Meteorites
NANA
1.7E-07 22
2.4.4 Abundance In Earth's Crust
NANA
9.9E-12 8.1
2.4.5 Abundance In Oceans
NANA
2E-23 1.1
2.4.6 Abundance In Humans
NANA
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Currently known uses of Rutherfordium metal are limited to research purpose only.
  • 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
Alloys, Research Purposes
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
0 1970
3.2.4 In Bone
0.00 p.p.m.0.00 p.p.m.
0 170000
4 Physical
4.1 Melting Point
2,100.00 °C860.00 °C
27 3410
4.2 Boiling Point
5,500.00 °C996.00 °C
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Unknown
Silver
4.3.3 Luster
Unknown Luster
NA
4.4 Hardness
4.4.1 Mohs Hardness
NANA
0.2 8.5
4.4.2 Brinell Hardness
NANA
0.14 3490
4.4.3 Vickers Hardness
NANA
121 3430
4.5 Speed of Sound
NANA
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
1.000933 1.7229
4.6.2 Reflectivity
NANA
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
Rf
Es
5.2 Isotopes
5.2.1 Known Isotopes
1316
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
NA1.54
0.7 2.54
5.3.2 Sanderson Electronegativity
NANA
0.22 2.56
5.3.3 Allred Rochow Electronegativity
NA1.20
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
0.62 2.48
5.3.5 Allen Electronegativity
NANA
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
NA2.70
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
579.90 kJ/mol619.00 kJ/mol
375.7 26130
5.5.2 2nd Energy Level
1,389.40 kJ/mol1,216.00 kJ/mol
710.2162 28750
5.5.3 3rd Energy Level
2,296.40 kJ/mol2,334.00 kJ/mol
1600 34230
5.5.4 4th Energy Level
3,077.90 kJ/mol3,734.00 kJ/mol
2780 37066
5.5.5 5th Energy Level
NANA
4305.2 97510
5.5.6 6th Energy Level
NANA
5715.8 105800
5.5.7 7th Energy level
NANA
7226.8 114300
5.5.8 8th Energy Level
NANA
8857.4 125300
5.5.9 9th Energy Level
NANA
14110 134700
5.5.10 10th Energy Level
NANA
17100 144300
5.5.11 11th Energy Level
NANA
19900 169988
5.5.12 12th Energy Level
NANA
22219 189368
5.5.13 13th Energy Level
NANA
26930 76015
5.5.14 14th Energy Level
NANA
29196 86450
5.5.15 15th Energy Level
NANA
41987 97510
5.5.16 16th Energy Level
NANA
47206 109480
5.5.17 17th Energy Level
NANA
52737 122200
5.5.18 18th Energy Level
NANA
58570 134810
5.5.19 19th Energy Level
NANA
64702 148700
5.5.20 20th Energy Level
NANA
80400 171200
5.5.21 21st Energy Level
NANA
87000 179100
5.5.22 22nd Energy Level
NANA
93400 184900
5.5.23 23rd Energy Level
NANA
98420 198800
5.5.24 24th Energy Level
NANA
104400 195200
5.5.25 25th Energy Level
NANA
121900 121900
5.5.26 26th Energy Level
NANA
127700 127700
5.5.27 27th Energy Level
NANA
133800 133800
5.5.28 28th Energy Level
NANA
139800 139800
5.5.29 29th Energy Level
NANA
148100 148100
5.5.30 30th Energy Level
NANA
154500 154500
5.6 Electrochemical Equivalent
NA4.74 g/amp-hr
0.16812 8.3209
5.7 Electron Work Function
NANA
2.14 5.65
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
10499
3 117
6.2 Electron Configuration
[Rn] 5f14 6d2 7s2
[Rn] 5f11 7s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
10499
3 117
6.4.2 Number of Neutrons
157153
4 184
6.4.3 Number of Electrons
10499
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
150.00 pm186.00 pm
112 265
6.5.2 Covalent Radius
157.00 pmNA
96 260
6.5.3 Van der Waals Radius
NANA
139 348
6.6 Atomic Weight
267.00 amu252.00 amu
6.94 294
6.7 Atomic Volume
NANA
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
NANA
8 392.42
6.10 Lattice Constant
NANA
228.58 891.25
6.11 Lattice Angles
NA
NA
6.12 Lattice C/A Ratio
NANA
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
23.20 g/cm38.84 g/cm3
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
NANA
0.512 20
7.2 Tensile Strength
NANA
2.5 11000
7.3 Viscosity
NANA
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NANA
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NANA
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
NANA
1.3 222
7.5.2 Bulk Modulus
NANA
1.6 462
7.5.3 Young's Modulus
NANA
1.7 528
7.6 Poisson Ratio
NANA
0.032 0.47
7.7 Other Mechanical Properties
Unknown
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
NANA
0.53 4500
8.1.2 Magnetic Ordering
Unknown
Paramagnetic
8.1.3 Permeability
NANA
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Unknown
Unknown
8.2.2 Resistivity
NANA
0.18 961
8.2.3 Electrical Conductivity
NANA
0.00666 0.63
8.2.4 Electron Affinity
NANA
0 222.8
9 Thermal
9.1 Specific Heat
NANA
0.11 3.6
9.2 Molar Heat Capacity
NANA
16.443 62.7
9.3 Thermal Conductivity
NANA
6.3 429
9.4 Critical Temperature
NANA
26.3 3223
9.5 Thermal Expansion
NANA
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
NANA
7.32 799.1
9.6.2 Enthalpy of Fusion
NANA
2.1 35.23
9.6.3 Enthalpy of Atomization
NANA
61.5 837
9.7 Standard Molar Entropy
NANA
9.5 198.1