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Properties of Einsteinium and Curium

Einsteinium
Curium
Properties of Curium & Einsteinium


Physical Properties
Melting Point
860.00 °C   
99+
1,340.00 °C   
34
Boiling Point
996.00 °C   
99+
3,110.00 °C   
30
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
Es   
Cm   
Isotopes
  
  
Known Isotopes
16   
23
15   
24
Electronegativity
  
  
Pauling Electronegativity
1.54   
26
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
619.00 kJ/mol   
99+
581.00 kJ/mol   
99+
2nd Energy Level
1,216.00 kJ/mol   
99+
1,196.00 kJ/mol   
99+
3rd Energy Level
2,334.00 kJ/mol   
99+
2,026.00 kJ/mol   
99+
Electrochemical Equivalent
4.74 g/amp-hr   
5
3.07 g/amp-hr   
16
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
8.84 g/cm3   
99+
13.51 g/cm3   
25
Density When Liquid (at m.p.)
Not Available   
13.85 g/cm3   
10
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
NA   
Unknown   
Periodic Table
Symbol
Es   
Cm   
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
99   
19
96   
22
Atomic Weight
252.00 amu   
16
247.00 amu   
18
Atomic Volume
Not Available   
18.28 cm3/mol   
26
Electron Configuration
[Rn] 5f11 7s2   
[Rn] 5f7 6d1 7s2   
Valence Electron Potential
Not Available   
44.50 (-eV)   
38
Atom
  
  
Number of Protons
99   
19
96   
22
Number of Neutrons
153   
9
151   
10
Number of Electrons
99   
19
96   
22
Crystal Structure
?
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)   
?
In crystallography, the hexagonal crystal structure and its double hexagonal crystal structure is one of the 7 crystal structure, The hexagonal lattice system consists of just one Bravais lattice type: the hexagonal shape.Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
FCC-Crystal-Structure-of-Einsteinium.jpg#100   
DHCP-Crystal-Structure-of-Curium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
186.00 pm   
9
174.00 pm   
20
Covalent Radius
Not Available   
169.00 pm   
26
Van der Waals Radius
Not Available   
200.00 pm   
28
Lattice Constant
Not Available   
Not Available   
Lattice Angles
NA   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Fermium
  
Berkelium
  
Previous Element
Californium
  
Americium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
Not Available   
1.25 nΩ·m   
99+
Electrical Conductivity
Not Available   
Not Available   
Electron Affinity
Not Available   
Not Available   
Electrical Property
Unknown   
Unknown   
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
13.51   
17
Magnetic Ordering
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
?
Antiferromagnetic metals denote or exhibit a form of magnetism characterized by an anti-parallel alignment of adjacent electron spins in a crystal lattice.Antiferromagnetic   
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   
15.00 kJ/mol   
21
Enthalpy of Atomization
Not Available   
Not Available   
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