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Fm Element
Fermium


Periodic Table
0
Symbol
Fm 0
Group Number
Not Available 0
Period Number
7 1
Block
f block 0
Element Family
Actinide 0
CAS Number
7440724 19
Space Group Name
Not Available 0
Space Group Number
Not Available 0
Facts
0
Interesting Facts
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
0
Sources
Bombarding Pu-239 with Neutrons 0
History
0
Who Discovered
Lawrence Berkeley National Laboratory 0
Discovery
In 1952 0
Abundance
0
Abundance In Universe
Not Available 0
Abundance In Sun
~-9999 % 0
Abundance In Meteorites
Not Available 0
Abundance In Earth's Crust
Not Available 0
Abundance In Oceans
Not Available 0
Abundance In Humans
Not Available 0
Uses
0
Uses & Benefits
  • Currently known uses of Fermium metal are limited to research purpose only.
0
Industrial Uses
NA 0
Medical Uses
NA 0
Other Uses
NA 0
Biological Properties
0
Toxicity
Unknown 0
Present in Human Body
No 0
In Blood
0.00 Blood/mg dm-3 37
In Bone
0.00 p.p.m. 36
Physical
0
Melting Point
1,527.00 °C 26
Boiling Point
Not Available 0
Appearance
0
Physical State
Solid 0
Color
Unknown 0
Luster
Not Defined 0
Hardness
0
Mohs Hardness
Not Available 0
Brinell Hardness
Not Available 0
Vickers Hardness
Not Available 0
Speed of Sound
Not Available 0
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Fm 0
Isotopes
0
Known Isotopes
18 21
Electronegativity
0
Pauling Electronegativity
1.30 32
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.20 27
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
Not Available 0
Electropositivity
0
Pauling Electropositivity
2.70 22
Ionization Energies
0
1st Energy Level
627.00 kJ/mol 47
2nd Energy Level
1,225.00 kJ/mol 58
3rd Energy Level
2,363.00 kJ/mol 54
4th Energy Level
3,792.00 kJ/mol 46
5th Energy Level
Not Available 0
6th Energy Level
Not Available 0
7th Energy level
Not Available 0
8th Energy Level
Not Available 0
9th Energy Level
Not Available 0
10th Energy Level
Not Available 0
11th Energy Level
Not Available 0
12th Energy Level
Not Available 0
13th Energy Level
Not Available 0
14th Energy Level
Not Available 0
15th Energy Level
Not Available 0
16th Energy Level
Not Available 0
17th Energy Level
Not Available 0
18th Energy Level
Not Available 0
19th Energy Level
Not Available 0
20th Energy Level
Not Available 0
21st Energy Level
Not Available 0
22nd Energy Level
Not Available 0
23rd Energy Level
Not Available 0
24th Energy Level
Not Available 0
25th Energy Level
Not Available 0
26th Energy Level
Not Available 0
27th Energy Level
Not Available 0
28th Energy Level
Not Available 0
29th Energy Level
Not Available 0
30th Energy Level
Not Available 0
Electrochemical Equivalent
3.20 g/amp-hr 13
Electron Work Function
Not Available 0
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity 0
Atomic
0
Atomic Number
100 18
Electron Configuration
[Rn] 5f12 7s2 0
Crystal Structure
Not Known 0
Crystal Lattice
Unknown-Crystal-Structure-of-Fermium.jpg#100 0
Atom
0
Number of Protons
100 18
Number of Neutrons
157 7
Number of Electrons
100 18
Radius of an Atom
0
Atomic Radius
Not Available 0
Covalent Radius
Not Available 0
Van der Waals Radius
245.00 pm 9
Atomic Weight
257.00 amu 15
Atomic Volume
Not Available 0
Adjacent Atomic Numbers
0
Previous Element
52 0
Next Element
87 0
Valence Electron Potential
Not Available 0
Lattice Constant
Not Available 0
Lattice Angles
NA 0
Lattice C/A Ratio
Not Available 0
Mechanical
0
Density
0
Density At Room Temperature
Not Available 0
Density When Liquid (at m.p.)
Not Available 0
Tensile Strength
Not Available 0
Viscosity
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
Not Available 0
Vapor Pressure at 2000 K
Not Available 0
Elasticity properties
0
Shear Modulus
Not Available 0
Bulk Modulus
Not Available 0
Young's Modulus
Not Available 0
Poisson Ratio
Not Available 0
Other Mechanical Properties
NA 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
Not Available 0
Magnetic Ordering
Unknown 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Unknown 0
Resistivity
Not Available 0
Electrical Conductivity
Not Available 0
Electron Affinity
Not Available 0
Thermal
0
Specific Heat
Not Available 0
Molar Heat Capacity
Not Available 0
Thermal Conductivity
Not Available 0
Critical Temperature
Not Available 0
Thermal Expansion
Not Available 0
Enthalpy
0
Enthalpy of Vaporization
Not Available 0
Enthalpy of Fusion
Not Available 0
Enthalpy of Atomization
Not Available 0
Standard Molar Entropy
Not Available 0
Summary >>
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