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Rhenium
Rhenium

Fermium
Fermium



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Rhenium
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Fermium

Rhenium Fermium Comparison

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1 Periodic Table
1.1 Symbol
Re
Fm
1.2 Group Number
7NA
Gadolinium Metal
0 17
1.3 Period Number
67
Lithium Metal
2 7
1.4 Block
d block
f block
1.5 Element Family
Transition Metal
Actinide
1.6 CAS Number
74401557440724
Aluminium Metal
7429905 54386242
1.7 Space Group Name
P63/mmc
Not Available
1.8 Space Group Number
194.00NA
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • Chemical properties of Rhenium are similar to Manganese.
  • Rhenium metal is created while refining Molybdenum.
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Bombarding Pu-239 with Neutrons
2.3 History
2.3.1 Who Discovered
Masataka Ogawa
Lawrence Berkeley National Laboratory
2.3.2 Discovery
In 1908
In 1952
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-8 %NA
Thallium Metal
5E-09 0.11
2.4.2 Abundance In Sun
~0.00000001 %~-9999 %
Beryllium Metal
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %NA
Gold Metal
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %NA
Radium Metal
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %NA
Protactinium Metal
2E-23 1.1
2.4.6 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Alloys of Rhenium are used as an electric contact material. It can resist withstand arc corrosion.
  • Its catalysts are used in hydrogenation of fine chemicals. Its Alloy with nickel is used to produce turbine blades.
  • Currently known uses of Fermium metal are limited to research purpose only.
3.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys
NA
3.2 Biological Properties
3.2.1 Toxicity
Low Toxic
Unknown
3.2.2 Present in Human Body
3.2.3 In Blood
NA0.00 Blood/mg dm-3
Plutonium Metal
0 1970
3.2.4 In Bone
NA0.00 p.p.m.
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
3,180.00 °C1,527.00 °C
Francium Metal
27 3410
4.2 Boiling Point
5,627.00 °CNA
Flerovium Metal
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery Gray
Unknown
4.3.3 Luster
Metallic
Not Defined
4.4 Hardness
4.4.1 Mohs Hardness
7.00NA
Cesium Metal
0.2 8.5
4.4.2 Brinell Hardness
1,320.00 MPaNA
Cesium Metal
0.14 3490
4.4.3 Vickers Hardness
1,350.00 MPaNA
Palladium Metal
121 3430
4.5 Speed of Sound
4,700.00 m/sNA
Thallium Metal
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum Metal
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
Re
Fm
5.2 Isotopes
5.2.1 Known Isotopes
3318
Tennessine Metal
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.901.30
Francium Metal
0.7 2.54
5.3.2 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.461.20
Cesium Metal
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
5.3.5 Allen Electronegativity
1.60NA
Cesium Metal
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.102.70
Gold Metal
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
760.00 kJ/mol627.00 kJ/mol
Cesium Metal
375.7 26130
5.5.2 2nd Energy Level
1,260.00 kJ/mol1,225.00 kJ/mol
Ruthenium Metal
710.2162 28750
5.5.3 3rd Energy Level
2,510.00 kJ/mol2,363.00 kJ/mol
Osmium Metal
1600 34230
5.5.4 4th Energy Level
3,640.00 kJ/mol3,792.00 kJ/mol
Thorium Metal
2780 37066
5.5.5 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
5.5.6 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
5.5.7 7th Energy level
NANA
Bohrium Metal
7226.8 114300
5.5.8 8th Energy Level
NANA
Hassium Metal
8857.4 125300
5.5.9 9th Energy Level
NANA
Yttrium Metal
14110 134700
5.5.10 10th Energy Level
NANA
Strontium Metal
17100 144300
5.5.11 11th Energy Level
NANA
Yttrium Metal
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum Metal
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum Metal
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum Metal
29196 86450
5.5.15 15th Energy Level
NANA
Manganese Metal
41987 97510
5.5.16 16th Energy Level
NANA
Iron Metal
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt Metal
52737 122200
5.5.18 18th Energy Level
NANA
Nickel Metal
58570 134810
5.5.19 19th Energy Level
NANA
Copper Metal
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum Metal
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum Metal
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum Metal
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum Metal
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum Metal
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum Metal
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum Metal
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum Metal
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum Metal
154500 154500
5.6 Electrochemical Equivalent
0.99 g/amp-hr3.20 g/amp-hr
Beryllium Metal
0.16812 8.3209
5.7 Electron Work Function
4.96 eVNA
Cesium Metal
2.14 5.65
5.8 Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
75100
Lithium Metal
3 117
6.2 Electron Configuration
[Xe] 4f14 5d5 6s2
[Rn] 5f12 7s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
Not Known
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
75100
Lithium Metal
3 117
6.4.2 Number of Neutrons
111157
Lithium Metal
4 184
6.4.3 Number of Electrons
75100
Lithium Metal
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
137.00 pmNA
Beryllium Metal
112 265
6.5.2 Covalent Radius
151.00 pmNA
Beryllium Metal
96 260
6.5.3 Van der Waals Radius
200.00 pm245.00 pm
Zinc Metal
139 348
6.6 Atomic Weight
186.21 amu257.00 amu
Lithium Metal
6.94 294
6.7 Atomic Volume
8.85 cm3/molNA
Manganese Metal
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
180.00 (-eV)NA
Francium Metal
8 392.42
6.10 Lattice Constant
276.10 pmNA
Beryllium Metal
228.58 891.25
6.11 Lattice Angles
π/2, π/2, 2 π/3
NA
6.12 Lattice C/A Ratio
1.62NA
Beryllium Metal
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
21.02 g/cm3NA
Lithium Metal
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
18.90 g/cm3NA
Lithium Metal
0.512 20
7.2 Tensile Strength
1,070.00 MPaNA
Indium Metal
2.5 11000
7.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
0.00 (Pa)NA
Tungsten Metal
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
178.00 GPaNA
Potassium Metal
1.3 222
7.5.2 Bulk Modulus
370.00 GPaNA
Cesium Metal
1.6 462
7.5.3 Young's Modulus
463.00 GPaNA
Cesium Metal
1.7 528
7.6 Poisson Ratio
0.30NA
Beryllium Metal
0.032 0.47
7.7 Other Mechanical Properties
Ductile, Malleable
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
21.02NA
Lithium Metal
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Unknown
8.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Unknown
8.2.2 Resistivity
193.00 nΩ·mNA
Thallium Metal
0.18 961
8.2.3 Electrical Conductivity
0.05 106/cm ΩNA
Plutonium Metal
0.00666 0.63
8.2.4 Electron Affinity
14.50 kJ/molNA
Mercury Metal
0 222.8
9 Thermal
9.1 Specific Heat
0.13 J/(kg K)NA
Americium Metal
0.11 3.6
9.2 Molar Heat Capacity
25.48 J/mol·KNA
Beryllium Metal
16.443 62.7
9.3 Thermal Conductivity
48.00 W/m·KNA
Neptunium Metal
6.3 429
9.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
9.5 Thermal Expansion
6.20 µm/(m·K)NA
Tungsten Metal
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
707.10 kJ/molNA
Zinc Metal
7.32 799.1
9.6.2 Enthalpy of Fusion
33.05 kJ/molNA
Cesium Metal
2.1 35.23
9.6.3 Enthalpy of Atomization
791.00 kJ/molNA
Mercury Metal
61.5 837
9.7 Standard Molar Entropy
36.90 J/mol.KNA
Beryllium Metal
9.5 198.1