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Fermium vs Uranium


Uranium vs Fermium


Periodic Table

Symbol
Fm   
U   

Group Number
Not Available   
0   
18

Period Number
7   
7   

Block
f block   
f block   

Element Family
Actinide   
Actinide   

CAS Number
7440724   
19
7440611   
28

Space Group Name
Not Available   
Cmcm   

Space Group Number
Not Available   
63.00   
10

Facts

Interesting Facts
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  

Sources
Bombarding Pu-239 with Neutrons   
Earth's crust, Mining, Ores of Minerals   

History
  
  

Who Discovered
Lawrence Berkeley National Laboratory   
Not Available   

Discovery
In 1952   
In 1789   

Abundance
  
  

Abundance In Universe
Not Available   
2 * 10-8 %   
29

Abundance In Sun
~-9999 %   
~0.0000001 %   
26

Abundance In Meteorites
Not Available   
0.00 %   
99+

Abundance In Earth's Crust
Not Available   
0.00 %   
36

Abundance In Oceans
Not Available   
0.00 %   
11

Uses

Uses & Benefits
  • Currently known uses of Fermium metal are limited to research purpose only.
  
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  

Industrial Uses
NA   
Ammunition Industry, Chemical Industry   

Medical Uses
NA   
NA   

Other Uses
NA   
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Unknown   
Toxic   

Present in Human Body
No   
No   

In Blood
0.00 Blood/mg dm-3   
37
Not Available   

In Bone
0.00 p.p.m.   
36
Not Available   

Physical Properties

Melting Point
1,527.00 °C   
26
1,132.00 °C   
39

Boiling Point
Not Available   
3,818.00 °C   
16

Appearance
  
  

Physical State
Solid   
Solid   

Color
Unknown   
Silvery Gray   

Luster
Not Defined   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
6.00   
6

Brinell Hardness
Not Available   
2,350.00 MPa   
2

Vickers Hardness
Not Available   
1,960.00 MPa   
2

Speed of Sound
Not Available   
3,155.00 m/s   
25

Optical Properties
  
  

Allotropes
No   
No   

α Allotropes
Not Available   
Not Available   

β Allotropes
Not Available   
Not Available   

γ Allotropes
Not Available   
Not Available   

Chemical Properties

Chemical Formula
Fm   
U   

Isotopes
  
  

Known Isotopes
18   
21
25   
14

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.38   
28

Allred Rochow Electronegativity
1.20   
27
1.22   
26

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.62   
26

Ionization Energies
  
  

1st Energy Level
627.00 kJ/mol   
99+
597.60 kJ/mol   
99+

2nd Energy Level
1,225.00 kJ/mol   
99+
1,420.00 kJ/mol   
99+

3rd Energy Level
2,363.00 kJ/mol   
99+
1,900.00 kJ/mol   
99+

4th Energy Level
3,792.00 kJ/mol   
99+
3,145.00 kJ/mol   
99+

Electrochemical Equivalent
3.20 g/amp-hr   
13
1.48 g/amp-hr   
99+

Electron Work Function
Not Available   
3.63 eV   
30

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
100   
18
92   
26

Electron Configuration
[Rn] 5f12 7s2   
[Rn] 5f3 6d1 7s2   

Crystal Structure
Not Known   
Orthorhombic (ORTH)   

Crystal Lattice
Unknown-Crystal-Structure-of-Fermium.jpg#100   
ORTH-Crystal-Structure-of-Uranium.jpg#100   

Atom
  
  

Number of Protons
100   
18
92   
26

Number of Neutrons
157   
7
146   
13

Number of Electrons
100   
18
92   
26

Radius of an Atom
  
  

Atomic Radius
Not Available   
156.00 pm   
29

Covalent Radius
Not Available   
196.00 pm   
14

Van der Waals Radius
245.00 pm   
9
186.00 pm   
33

Atomic Weight
257.00 amu   
15
238.03 amu   
21

Atomic Volume
Not Available   
12.59 cm3/mol   
40

Adjacent Atomic Numbers
  
  

Previous Element

Next Element
Neptunium
  

Valence Electron Potential
Not Available   
170.00 (-eV)   
4

Lattice Constant
Not Available   
295.08 pm   
99+

Lattice Angles
NA   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
Not Available   
19.10 g/cm3   
17

Density When Liquid (at m.p.)
Not Available   
17.30 g/cm3   
7

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
Not Available   
0.01 (Pa)   
20

Elasticity properties
  
  

Shear Modulus
Not Available   
111.00 GPa   
10

Bulk Modulus
Not Available   
100.00 GPa   
16

Young's Modulus
Not Available   
208.00 GPa   
10

Poisson Ratio
Not Available   
0.23   
30

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
18.80   
10

Magnetic Ordering
Unknown   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Unknown   
Poor Conductor   

Resistivity
Not Available   
0.28 nΩ·m   
99+

Electrical Conductivity
Not Available   
0.04 106/cm Ω   
37

Thermal Properties

Specific Heat
Not Available   
0.12 J/(kg K)   
40

Molar Heat Capacity
Not Available   
27.67 J/mol·K   
15

Thermal Conductivity
Not Available   
27.50 W/m·K   
40

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
13.90 µm/(m·K)   
27

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
477.00 kJ/mol   
13

Enthalpy of Fusion
Not Available   
15.48 kJ/mol   
19

Enthalpy of Atomization
Not Available   
489.50 kJ/mol   
14

Standard Molar Entropy
Not Available   
50.20 J/mol.K   
31

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