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Properties of Holmium and Bohrium

Holmium
Bohrium
Properties of Bohrium & Holmium


Physical Properties
Melting Point
1,461.00 °C   
30
Not Available   
Boiling Point
2,600.00 °C   
99+
Not Available   
Hardness
  
  
Mohs Hardness
Not Available   
Not Available   
Brinell Hardness
746.00 MPa   
13
Not Available   
Vickers Hardness
481.00 MPa   
23
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
2,760.00 m/s   
30
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
Ho   
Bh   
Isotopes
  
  
Known Isotopes
34   
5
5   
32
Electronegativity
  
  
Pauling Electronegativity
1.23   
37
Not Available   
Sanderson Electronegativity
Not Available   
Not Available   
Allred Rochow Electronegativity
1.10   
30
Not Available   
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.77   
17
Not Available   
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol   
99+
742.90 kJ/mol   
23
2nd Energy Level
1,140.00 kJ/mol   
99+
1,688.50 kJ/mol   
30
3rd Energy Level
2,204.00 kJ/mol   
99+
2,566.50 kJ/mol   
99+
Electrochemical Equivalent
2.02 g/amp-hr   
29
Not Available   
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
8.79 g/cm3   
99+
37.10 g/cm3   
3
Density When Liquid (at m.p.)
8.34 g/cm3   
26
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
16
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
26.30 GPa   
28
Not Available   
Bulk Modulus
40.20 GPa   
32
Not Available   
Young's Modulus
64.80 GPa   
31
Not Available   
Poisson Ratio
0.23   
29
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, 
?
Sectility is the ability to be cut into pieces. Metals and paper are sectile.Sectile   
Unknown   
Periodic Table
Symbol
Ho   
Bh   
Group Number
Not Available   
7   
11
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 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 Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide   
?
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
67   
99+
107   
11
Atomic Weight
164.93 amu   
99+
270.00 amu   
8
Atomic Volume
18.70 cm3/mol   
24
Not Available   
Electron Configuration
[Xe] 4f11 6s2   
[Rn] 5f14 6d5 7s2   
Valence Electron Potential
47.90 (-eV)   
31
Not Available   
Atom
  
  
Number of Protons
67   
99+
107   
11
Number of Neutrons
98   
34
155   
8
Number of Electrons
67   
99+
107   
11
Crystal Structure
?
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)   
?
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
HCP-Crystal-Structure-of-Holmium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
176.00 pm   
18
128.00 pm   
99+
Covalent Radius
192.00 pm   
17
141.00 pm   
99+
Van der Waals Radius
216.00 pm   
24
Not Available   
Lattice Constant
357.73 pm   
38
Not Available   
Lattice Angles
π/2, π/2, 2 π/3   
NA   
Lattice C/A Ratio
1.57   
17
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Erbium
  
Hassium
  
Previous Element
Dysprosium
  
Seaborgium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
814.00 nΩ·m   
4
Not Available   
Electrical Conductivity
0.01 106/cm Ω   
99+
Not Available   
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
8.80   
35
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
0.16 J/(kg K)   
35
Not Available   
Thermal Conductivity
16.20 W/m·K   
99+
Not Available   
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
27.15 J/mol·K   
19
Not Available   
Thermal Expansion
11.20 µm/(m·K)   
35
Not Available   
Standard Molar Entropy
75.30 J/mol.K   
8
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
241.00 kJ/mol   
38
Not Available   
Enthalpy of Fusion
11.76 kJ/mol   
29
Not Available   
Enthalpy of Atomization
301.00 kJ/mol   
36
Not Available   
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