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Hassium vs Fermium


Fermium vs Hassium


Periodic Table

Symbol
Hs   
Fm   

Group Number
8   
10
Not Available   

Period Number
7   
7   

Block
d block   
f block   

Element Family
Transition Metal   
Actinide   

CAS Number
54037579   
11
7440724   
19

Space Group Name
Not Available   
Not Available   

Space Group Number
Not Available   
Not Available   

Facts

Interesting Facts
  • Hassium metals rate of decay is very high.
  • Hassium metals 1st sample was synthesized through a nuclear reaction.
  
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  

Sources
Synthetically Produced   
Bombarding Pu-239 with Neutrons   

History
  
  

Who Discovered
Gesellschaft für Schwerionenforschung   
Lawrence Berkeley National Laboratory   

Discovery
In 1984   
In 1952   

Abundance
  
  

Uses

Uses & Benefits
  • Currently known uses of Hassium metal are limited to research purpose only.
  
  • Currently known uses of Fermium metal are limited to research purpose only.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Research Purposes   
NA   

Biological Properties
  
  

Present in Human Body
No   
No   

In Blood
0.00 Blood/mg dm-3   
37
0.00 Blood/mg dm-3   
37

In Bone
0.00 p.p.m.   
36
0.00 p.p.m.   
36

Physical Properties

Melting Point
Not Available   
1,527.00 °C   
26

Boiling Point
Not Available   
Not Available   

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Unknown   

Luster
NA   
Not Defined   

Hardness
  
  

Speed of Sound
Not Available   
Not Available   

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
Hs   
Fm   

Isotopes
  
  

Known Isotopes
7   
31
18   
21

Electronegativity
  
  

Pauling Electronegativity
Not Available   
1.30   
32

Allred Rochow Electronegativity
Not Available   
1.20   
27

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.70   
22

Ionization Energies
  
  

1st Energy Level
733.30 kJ/mol   
26
627.00 kJ/mol   
99+

2nd Energy Level
1,756.00 kJ/mol   
24
1,225.00 kJ/mol   
99+

3rd Energy Level
2,827.00 kJ/mol   
36
2,363.00 kJ/mol   
99+

4th Energy Level
3,637.50 kJ/mol   
99+
3,792.00 kJ/mol   
99+

5th Energy Level
4,940.00 kJ/mol   
34
Not Available   

6th Energy Level
6,175.10 kJ/mol   
23
Not Available   

7th Energy level
7,535.50 kJ/mol   
21
Not Available   

8th Energy Level
8,857.40 kJ/mol   
20
Not Available   

Electrochemical Equivalent
Not Available   
3.20 g/amp-hr   
13

Electron Work Function
Not Available   
Not Available   

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

Atomic Properties

Atomic Number
108   
10
100   
18

Electron Configuration
[Rn] 5f14 6d6 7s2   
[Rn] 5f12 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Not Known   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
Unknown-Crystal-Structure-of-Fermium.jpg#100   

Atom
  
  

Number of Protons
108   
10
100   
18

Number of Neutrons
158   
6
157   
7

Number of Electrons
108   
10
100   
18

Radius of an Atom
  
  

Atomic Radius
126.00 pm   
99+
Not Available   

Covalent Radius
134.00 pm   
99+
Not Available   

Van der Waals Radius
Not Available   
245.00 pm   
9

Atomic Weight
269.00 amu   
9
257.00 amu   
15

Atomic Volume
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Bohrium
  

Next Element
Meitnerium
  

Valence Electron Potential
Not Available   
Not Available   

Lattice Constant
Not Available   
Not Available   

Lattice Angles
NA   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
40.70 g/cm3   
1
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
Unknown   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Electrical Properties
  
  

Thermal Properties

Specific Heat
Not Available   
Not Available   

Molar Heat Capacity
Not Available   
Not Available   

Thermal Conductivity
Not Available   
Not Available   

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Standard Molar Entropy
Not Available   
Not Available   

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