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Properties of Europium and Americium

Europium
Americium
Properties of Americium & Europium


Physical Properties
Melting Point
822.00 °C   
99+
994.00 °C   
99+
Boiling Point
1,597.00 °C   
99+
2,607.00 °C   
99+
Hardness
  
  
Mohs Hardness
Not Available   
Not Available   
Brinell Hardness
Not Available   
Not Available   
Vickers Hardness
167.00 MPa   
34
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
Eu   
Am   
Isotopes
  
  
Known Isotopes
31   
8
16   
23
Electronegativity
  
  
Pauling Electronegativity
1.20   
39
1.30   
32
Sanderson Electronegativity
1.01   
22
Not Available   
Allred Rochow Electronegativity
Not Available   
1.20   
27
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
Not Available   
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.70   
22
Ionization Energies
  
  
1st Energy Level
547.10 kJ/mol   
99+
578.00 kJ/mol   
99+
2nd Energy Level
1,085.00 kJ/mol   
99+
1,158.00 kJ/mol   
99+
3rd Energy Level
2,404.00 kJ/mol   
99+
2,132.00 kJ/mol   
99+
Electrochemical Equivalent
1.89 g/amp-hr   
33
3.02 g/amp-hr   
17
Electron Work Function
2.50 eV   
99+
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, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility   
?
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, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility   
Mechanical Properties
Density
  
  
Density At Room Temperature
5.26 g/cm3   
99+
12.00 g/cm3   
30
Density When Liquid (at m.p.)
5.13 g/cm3   
99+
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
19.40 (Pa)   
4
0.00 (Pa)   
13
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
120.00 MPa   
15
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
7.90 GPa   
99+
Not Available   
Bulk Modulus
8.30 GPa   
99+
Not Available   
Young's Modulus
18.20 GPa   
99+
Not Available   
Poisson Ratio
0.15   
34
Not Available   
Other Mechanical Properties
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile   
NA   
Periodic Table
Symbol
Eu   
Am   
Group Number
Not Available   
Not Available   
Period Number
6   
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 Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide   
?
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
63   
99+
95   
23
Atomic Weight
151.96 amu   
99+
243.00 amu   
20
Atomic Volume
28.90 cm3/mol   
8
17.86 cm3/mol   
29
Electron Configuration
[Xe] 4f7 6s2   
[Rn] 5f7 7s2   
Valence Electron Potential
45.60 (-eV)   
35
44.00 (-eV)   
40
Atom
  
  
Number of Protons
63   
99+
95   
23
Number of Neutrons
89   
38
148   
12
Number of Electrons
63   
99+
95   
23
Crystal Structure
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)   
?
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
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
173.00 pm   
21
Covalent Radius
198.00 pm   
13
180.00 pm   
21
Van der Waals Radius
233.00 pm   
18
244.00 pm   
10
Lattice Constant
458.10 pm   
17
346.81 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Gadolinium
  
Curium
  
Previous Element
Samarium
  
Plutonium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
0.90 nΩ·m   
99+
0.69 nΩ·m   
99+
Electrical Conductivity
0.01 106/cm Ω   
99+
0.02 106/cm Ω   
99+
Electron Affinity
50.00 kJ/mol   
21
Not Available   
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Unknown   
Magnetic Characteristics
  
  
Specific Gravity
5.24   
99+
13.67   
15
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   
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.18 J/(kg K)   
33
0.11 J/(kg K)   
99+
Thermal Conductivity
13.90 W/m·K   
99+
10.00 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
27.66 J/mol·K   
16
62.70 J/mol·K   
1
Thermal Expansion
35.00 µm/(m·K)   
8
Not Available   
Standard Molar Entropy
77.80 J/mol.K   
4
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
143.50 kJ/mol   
99+
Not Available   
Enthalpy of Fusion
9.21 kJ/mol   
37
14.39 kJ/mol   
24
Enthalpy of Atomization
180.00 kJ/mol   
99+
268.00 kJ/mol   
40
All >>
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