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Properties of Uranium and Berkelium

Uranium
Berkelium
Properties of Berkelium & Uranium


Physical Properties
Melting Point
1,132.00 °C   
39
986.00 °C   
99+
Boiling Point
3,818.00 °C   
16
2,627.00 °C   
40
Hardness
  
  
Mohs Hardness
6.00   
6
Not Available   
Brinell Hardness
2,350.00 MPa   
2
Not Available   
Vickers Hardness
1,960.00 MPa   
2
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
3,155.00 m/s   
25
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
U   
Bk   
Isotopes
  
  
Known Isotopes
25   
14
14   
25
Electronegativity
  
  
Pauling Electronegativity
1.38   
28
1.30   
32
Sanderson Electronegativity
Not Available   
Not Available   
Allred Rochow Electronegativity
1.22   
26
1.20   
27
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
2.70   
1
Electropositivity
  
  
Pauling Electropositivity
2.62   
26
2.70   
22
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol   
99+
601.00 kJ/mol   
99+
2nd Energy Level
1,420.00 kJ/mol   
99+
1,186.00 kJ/mol   
99+
3rd Energy Level
1,900.00 kJ/mol   
99+
2,152.00 kJ/mol   
99+
Electrochemical Equivalent
1.48 g/amp-hr   
99+
3.07 g/amp-hr   
16
Electron Work Function
3.63 eV   
30
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
19.10 g/cm3   
17
14.78 g/cm3   
22
Density When Liquid (at m.p.)
17.30 g/cm3   
7
13.25 g/cm3   
11
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
0.01 (Pa)   
20
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
111.00 GPa   
10
Not Available   
Bulk Modulus
100.00 GPa   
16
Not Available   
Young's Modulus
208.00 GPa   
10
Not Available   
Poisson Ratio
0.23   
30
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, 
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable   
NA   
Periodic Table
Symbol
U   
Bk   
Group Number
0   
18
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
92   
26
97   
21
Atomic Weight
238.03 amu   
21
247.00 amu   
18
Atomic Volume
12.59 cm3/mol   
40
Not Available   
Electron Configuration
[Rn] 5f3 6d1 7s2   
[Rn] 5f9 7s2   
Valence Electron Potential
170.00 (-eV)   
4
45.50 (-eV)   
36
Atom
  
  
Number of Protons
92   
26
97   
21
Number of Neutrons
146   
13
150   
11
Number of Electrons
92   
26
97   
21
Crystal Structure
?
Orthorhombic lattices occur due to stretching a cubic lattice along two of its orthogonal sides. It gets result in a rectangular prism with a rectangular at base. These 3 bases intersect each other at 90°.Orthorhombic (ORTH)   
?
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
ORTH-Crystal-Structure-of-Uranium.jpg#100   
DHCP-Crystal-Structure-of-Berkelium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
170.00 pm   
22
Covalent Radius
196.00 pm   
14
Not Available   
Van der Waals Radius
186.00 pm   
33
Not Available   
Lattice Constant
295.08 pm   
99+
341.60 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
Neptunium
  
Californium
  
Previous Element
Protactinium
  
Curium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
0.28 nΩ·m   
99+
Not Available   
Electrical Conductivity
0.04 106/cm Ω   
37
Not Available   
Electron Affinity
Not Available   
Not Available   
Electrical Property
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
18.80   
10
14.00   
14
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
0.12 J/(kg K)   
40
Not Available   
Thermal Conductivity
27.50 W/m·K   
40
10.00 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
27.67 J/mol·K   
15
Not Available   
Thermal Expansion
13.90 µm/(m·K)   
27
Not Available   
Standard Molar Entropy
50.20 J/mol.K   
31
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol   
13
Not Available   
Enthalpy of Fusion
15.48 kJ/mol   
19
Not Available   
Enthalpy of Atomization
489.50 kJ/mol   
14
Not Available   
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