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Mendelevium vs Flerovium


Flerovium vs Mendelevium


Periodic Table

Symbol
Md   
Fl   

Group Number
Not Available   
14   
4

Period Number
7   
7   

Block
f block   
p block   

Element Family
Actinide   
Post-​Transition   

CAS Number
7440111   
99+
54085164   
5

Space Group Name
Not Available   
Not Available   

Space Group Number
Not Available   
Not Available   

Facts

Interesting Facts
  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
  
Not Available   

Sources
Bombarding Einsteinium with Helium Ions   
NA   

History
  
  

Who Discovered
Lawrence Berkeley National Laboratory   
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory   

Discovery
In 1955   
In 1999   

Abundance
  
  

Uses

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

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
NA   
Alloys, Research Purposes   

Biological Properties
  
  

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
827.00 °C   
99+
67.00 °C   
99+

Boiling Point
Not Available   
147.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Luster
Metallic   
Unknown Luster   

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
Md   
Fl   

Isotopes
  
  

Known Isotopes
16   
23
1   
34

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
Not Available   

Allred Rochow Electronegativity
1.20   
27
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
Not Available   

Ionization Energies
  
  

1st Energy Level
635.00 kJ/mol   
99+
823.90 kJ/mol   
13

2nd Energy Level
1,235.00 kJ/mol   
99+
1,601.60 kJ/mol   
34

3rd Energy Level
2,470.00 kJ/mol   
99+
3,367.30 kJ/mol   
18

4th Energy Level
3,840.00 kJ/mol   
99+
4,399.70 kJ/mol   
27

5th Energy Level
Not Available   
5,847.00 kJ/mol   
26

Electrochemical Equivalent
3.21 g/amp-hr   
12
Not Available   

Electron Work Function
Not Available   
Not Available   

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

Atomic Properties

Atomic Number
101   
17
114   
4

Electron Configuration
[Rn] 5f13 7s2   
[Rn] 5f14 6d10 7s2 7p2   

Crystal Structure
Not Known   
Not Known   

Crystal Lattice
Unknown-Crystal-Structure-of-Mendelevium.jpg#100   
Unknown-Crystal-Structure-of-Flerovium.jpg#100   

Atom
  
  

Number of Protons
101   
17
114   
4

Number of Neutrons
157   
7
184   
1

Number of Electrons
101   
17
114   
4

Radius of an Atom
  
  

Atomic Radius
Not Available   
180.00 pm   
14

Covalent Radius
Not Available   
171.00 pm   
24

Van der Waals Radius
246.00 pm   
8
Not Available   

Atomic Weight
258.00 amu   
14
289.00 amu   
3

Atomic Volume
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Fermium
  
Nihonium
  

Next Element
Nobelium
  
Moscovium
  

Valence Electron Potential
Not Available   
Not Available   

Lattice Constant
Not Available   
Not Available   

Lattice Angles
NA   
Unknown   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
Not Available   
14.00 g/cm3   
23

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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