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Properties of Gadolinium and Bohrium

Gadolinium
Bohrium
Properties of Bohrium & Gadolinium


Physical Properties
Melting Point
1,311.00 °C   
35
Not Available   
Boiling Point
3,233.00 °C   
25
Not Available   
Hardness
  
  
Mohs Hardness
Not Available   
Not Available   
Brinell Hardness
Not Available   
Not Available   
Vickers Hardness
510.00 MPa   
22
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
2,680.00 m/s   
34
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
Gd   
Bh   
Isotopes
  
  
Known Isotopes
26   
13
5   
32
Electronegativity
  
  
Pauling Electronegativity
1.20   
39
Not Available   
Sanderson Electronegativity
Not Available   
Not Available   
Allred Rochow Electronegativity
1.11   
29
Not Available   
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.80   
15
Not Available   
Ionization Energies
  
  
1st Energy Level
593.40 kJ/mol   
99+
742.90 kJ/mol   
23
2nd Energy Level
1,170.00 kJ/mol   
99+
1,688.50 kJ/mol   
30
3rd Energy Level
1,990.00 kJ/mol   
99+
2,566.50 kJ/mol   
99+
Electrochemical Equivalent
1.96 g/amp-hr   
32
Not Available   
Electron Work Function
3.10 eV   
35
Not Available   
Other Chemical Properties
?
Corrosion is a process which converts refined metals to their more stable forms, for example, its oxide and hydroxide. This process of metals getting corroded is a gradual destruction of metals by chemical reactions.Corrosion, 
?
Flammable metals have ability to burn or ignite, causing fire or combustion.Flammable, 
?
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   
?
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
7.90 g/cm3   
99+
37.10 g/cm3   
3
Density When Liquid (at m.p.)
7.40 g/cm3   
31
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
30
Not Available   
Vapor Pressure at 2000 K
7.39 (Pa)   
9
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
21.80 GPa   
33
Not Available   
Bulk Modulus
37.90 GPa   
34
Not Available   
Young's Modulus
54.80 GPa   
35
Not Available   
Poisson Ratio
0.26   
23
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
Gd   
Bh   
Group Number
0   
18
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
64   
99+
107   
11
Atomic Weight
47.87 amu   
99+
270.00 amu   
8
Atomic Volume
19.90 cm3/mol   
20
Not Available   
Electron Configuration
[Xe] 4f7 5d1 6s2   
[Rn] 5f14 6d5 7s2   
Valence Electron Potential
46.10 (-eV)   
34
Not Available   
Atom
  
  
Number of Protons
64   
99+
107   
11
Number of Neutrons
93   
37
155   
8
Number of Electrons
64   
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-Gadolinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
128.00 pm   
99+
Covalent Radius
196.00 pm   
14
141.00 pm   
99+
Van der Waals Radius
237.00 pm   
15
Not Available   
Lattice Constant
363.60 pm   
32
Not Available   
Lattice Angles
π/2, π/2, 2 π/3   
NA   
Lattice C/A Ratio
1.59   
9
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Terbium
  
Hassium
  
Previous Element
Europium
  
Seaborgium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
1.31 nΩ·m   
99+
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
7.90   
40
Not Available   
Magnetic Ordering
Ferromagnetic   
Unknown   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.23 J/(kg K)   
27
Not Available   
Thermal Conductivity
10.60 W/m·K   
99+
Not Available   
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
37.03 J/mol·K   
2
Not Available   
Thermal Expansion
9.40 µm/(m·K)   
99+
Not Available   
Standard Molar Entropy
68.10 J/mol.K   
16
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
359.40 kJ/mol   
21
Not Available   
Enthalpy of Fusion
10.05 kJ/mol   
36
Not Available   
Enthalpy of Atomization
352.00 kJ/mol   
27
Not Available   
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