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Properties of Uranium and Bohrium

Uranium
Bohrium
Properties of Bohrium & Uranium


Physical Properties
Melting Point
1,132.00 °C   
39
Not Available   
Boiling Point
3,818.00 °C   
16
Not Available   
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   
Bh   
Isotopes
  
  
Known Isotopes
25   
14
5   
32
Electronegativity
  
  
Pauling Electronegativity
1.38   
28
Not Available   
Sanderson Electronegativity
Not Available   
Not Available   
Allred Rochow Electronegativity
1.22   
26
Not Available   
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.62   
26
Not Available   
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol   
99+
742.90 kJ/mol   
23
2nd Energy Level
1,420.00 kJ/mol   
99+
1,688.50 kJ/mol   
30
3rd Energy Level
1,900.00 kJ/mol   
99+
2,566.50 kJ/mol   
99+
Electrochemical Equivalent
1.48 g/amp-hr   
99+
Not Available   
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
19.10 g/cm3   
17
37.10 g/cm3   
3
Density When Liquid (at m.p.)
17.30 g/cm3   
7
Not Available   
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   
Unknown   
Periodic Table
Symbol
U   
Bh   
Group Number
0   
18
7   
11
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 d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d 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   
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
Atomic Properties
Atomic Number
92   
26
107   
11
Atomic Weight
238.03 amu   
21
270.00 amu   
8
Atomic Volume
12.59 cm3/mol   
40
Not Available   
Electron Configuration
[Rn] 5f3 6d1 7s2   
[Rn] 5f14 6d5 7s2   
Valence Electron Potential
170.00 (-eV)   
4
Not Available   
Atom
  
  
Number of Protons
92   
26
107   
11
Number of Neutrons
146   
13
155   
8
Number of Electrons
92   
26
107   
11
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)   
?
The hexagonal crystal system consists of the 7 point groups such that all their space groups have the hexagonal lattice as underlying lattice. The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has theHexagonal Close Packed (HCP)   
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
128.00 pm   
99+
Covalent Radius
196.00 pm   
14
141.00 pm   
99+
Van der Waals Radius
186.00 pm   
33
Not Available   
Lattice Constant
295.08 pm   
99+
Not Available   
Lattice Angles
π/2, π/2, π/2   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Neptunium
  
Hassium
  
Previous Element
Protactinium
  
Seaborgium
  
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   
Unknown   
Magnetic Characteristics
  
  
Specific Gravity
18.80   
10
Not Available   
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   
Unknown   
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
Not Available   
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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