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Properties of Mendelevium and Nobelium


Properties of Nobelium & Mendelevium


Physical Properties

Melting Point
827.00 °C   
99+
827.00 °C   
99+

Boiling Point
Not Available   
Not Available   

Hardness
  
  

Mohs Hardness
Not Available   
Not Available   

Brinell Hardness
Not Available   
Not Available   

Vickers Hardness
Not Available   
Not Available   

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
Not Available   

Speed of Sound
Not Available   
Not Available   

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   
No   

Isotopes
  
  

Known Isotopes
16   
23
13   
26

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.30   
32

Sanderson Electronegativity
Not Available   
Not Available   

Allred Rochow Electronegativity
1.20   
27
1.20   
27

Mulliken-Jaffe Electronegativity
Not Available   
Not Available   

Allen Electronegativity
Not Available   
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.70   
22

Ionization Energies
  
  

1st Energy Level
635.00 kJ/mol   
99+
642.00 kJ/mol   
99+

2nd Energy Level
1,235.00 kJ/mol   
99+
1,254.00 kJ/mol   
99+

3rd Energy Level
2,470.00 kJ/mol   
99+
2,643.00 kJ/mol   
99+

Electrochemical Equivalent
3.21 g/amp-hr   
12
4.83 g/amp-hr   
4

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces.Radioactivity
  
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces.Radioactivity
  

Mechanical Properties

Density
  
  

Density At Room Temperature
Not Available   
Not Available   

Density When Liquid (at m.p.)
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
Not Available   

Vapor Pressure at 2000 K
Not Available   
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
Not Available   
Not Available   

Bulk Modulus
Not Available   
Not Available   

Young's Modulus
Not Available   
Not Available   

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
Unknown   
Unknown   

Periodic Table

Symbol
Md   
No   

Group Number
Not Available   
Not Available   

Period Number
7   
7   

Block
?
The f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f block
  
?
The f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f block
  

Element Family
?
Total 15 metals are included in actinide series, from Actinium to Lawrencium. Actinide series is located under f and d block of the periodic table.Actinide
  
?
Total 15 metals are included in actinide series, from Actinium to Lawrencium. Actinide series is located under f and d block of the periodic table.Actinide
  

Atomic Properties

Atomic Number
101   
17
102   
16

Atomic Weight
258.00 amu   
14
259.00 amu   
13

Atomic Volume
Not Available   
Not Available   

Electron Configuration
[Rn] 5f13 7s2   
[Rn] 5f14 7s2   

Valence Electron Potential
Not Available   
26.00 (-eV)   
99+

Atom
  
  

Number of Protons
101   
17
102   
16

Number of Neutrons
157   
7
157   
7

Number of Electrons
101   
17
102   
16

Crystal Structure
?
The crustal structure for this metal is Unknown or not yet discoveredNot Known
  
?
The crustal structure for this metal is Unknown or not yet discoveredNot Known
  

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

Radius of an Atom
  
  

Atomic Radius
Not Available   
Not Available   

Covalent Radius
Not Available   
Not Available   

Van der Waals Radius
246.00 pm   
8
246.00 pm   
8

Lattice Constant
Not Available   
Not Available   

Lattice Angles
NA   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Next Element
Nobelium
  
Lawrencium
  

Previous Element
Fermium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
Not Available   
Not Available   

Electrical Conductivity
Not Available   
Not Available   

Electron Affinity
Not Available   
Not Available   

Electrical Property
Unknown   
Unknown   

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
Not Available   

Magnetic Ordering
Unknown   
Unknown   

Permeability
Not Available   
Not Available   

Susceptibility
Not Available   
Not Available   

Thermal Properties

Specific Heat
Not Available   
Not Available   

Thermal Conductivity
Not Available   
Not Available   

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Standard Molar Entropy
Not Available   
Not Available   

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
Not Available   

Enthalpy of Fusion
Not Available   
Not Available   

Enthalpy of Atomization
Not Available   
Not Available   

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