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Bohrium vs Niobium

Bohrium
Niobium
Niobium vs Bohrium


Periodic Table
Symbol
Bh  
Nb  
Group Number
7  
11
5  
13
Period Number
7  
5  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
54037148  
12
7440031  
99+
Space Group Name
Not Available  
Im_ 3m  
Space Group Number
Not Available  
229.00  
1
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • Niobium metal was used to get called Columbium in past.
  • Niobium metal found freely in nature (abundance).
  
Sources
Found in Minerals, Mining, Synthetically Produced  
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Charles Hatchett  
Discovery
In 1981  
In 1801  
Abundance
  
  
Abundance In Universe
Not Available  
2 * 10-7 %  
22
Abundance In Sun
~-9999 %  
~0.0000004 %  
23
Abundance In Meteorites
Not Available  
0.00 %  
35
Abundance In Earth's Crust
Not Available  
0.00 %  
25
Abundance In Oceans
Not Available  
0.00 %  
34
Uses
Uses & Benefits
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
  • Niobium alloys are used in jet engines and rockets and spacecraft, beams and girders for buildings and oil and gas pipelines.
  • It is used superconducting magnets in particles accelerators, NMR and MRI equipment.
  
Industrial Uses
NA  
Aerospace Industry, Ammunition Industry, Electrical Industry, Electronic Industry  
Medical Uses
NA  
NA  
Other Uses
Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
Unknown  
Low Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.01 Blood/mg dm-3  
25
In Bone
0.00 p.p.m.  
36
0.07 p.p.m.  
25
Physical Properties
Melting Point
Not Available  
2,468.00 °C  
6
Boiling Point
Not Available  
2,468.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Unknown  
Gray  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
Not Available  
6.00  
6
Brinell Hardness
Not Available  
735.00 MPa  
14
Vickers Hardness
Not Available  
870.00 MPa  
12
Speed of Sound
Not Available  
3,480.00 m/s  
21
Optical Properties
  
  
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
Bh  
Nb  
Isotopes
  
  
Known Isotopes
5  
32
17  
22
Electronegativity
  
  
Pauling Electronegativity
Not Available  
1.60  
23
Sanderson Electronegativity
Not Available  
1.42  
16
Allred Rochow Electronegativity
Not Available  
1.23  
25
Allen Electronegativity
Not Available  
1.41  
31
Electropositivity
  
  
Pauling Electropositivity
Not Available  
2.40  
31
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
652.10 kJ/mol  
99+
2nd Energy Level
1,688.50 kJ/mol  
30
1,380.00 kJ/mol  
99+
3rd Energy Level
2,566.50 kJ/mol  
99+
2,416.00 kJ/mol  
99+
4th Energy Level
3,598.90 kJ/mol  
99+
3,700.00 kJ/mol  
99+
5th Energy Level
4,727.80 kJ/mol  
37
4,877.00 kJ/mol  
36
6th Energy Level
5,991.70 kJ/mol  
24
9,847.00 kJ/mol  
11
7th Energy level
7,226.80 kJ/mol  
22
12,100.00 kJ/mol  
14
Electrochemical Equivalent
Not Available  
0.69 g/amp-hr  
99+
Electron Work Function
Not Available  
4.30 eV  
18
Other Chemical Properties
Ionization, Radioactive Isotopes  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic Properties
Atomic Number
107  
11
41  
99+
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Kr] 4d4 5s1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
107  
11
41  
99+
Number of Neutrons
155  
8
52  
99+
Number of Electrons
107  
11
41  
99+
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
146.00 pm  
35
Covalent Radius
141.00 pm  
99+
164.00 pm  
28
Van der Waals Radius
Not Available  
200.00 pm  
28
Atomic Weight
270.00 amu  
8
92.91 amu  
99+
Atomic Volume
Not Available  
10.87 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Zirconium
  
Next Element
Hassium
  
Molybdenum
  
Valence Electron Potential
Not Available  
104.00 (-eV)  
8
Lattice Constant
Not Available  
330.04 pm  
99+
Lattice Angles
NA  
π/2, π/2, π/2  
Lattice C/A Ratio
Not Available  
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
8.57 g/cm3  
99+
Tensile Strength
Not Available  
330.00 MPa  
12
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available  
0.00 (Pa)  
27
Elasticity properties
  
  
Shear Modulus
Not Available  
38.00 GPa  
19
Bulk Modulus
Not Available  
170.00 GPa  
10
Young's Modulus
Not Available  
105.00 GPa  
20
Poisson Ratio
Not Available  
0.40  
4
Other Mechanical Properties
Unknown  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available  
8.57  
37
Magnetic Ordering
Unknown  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
Unknown  
Conductor  
Resistivity
Not Available  
152.00 nΩ·m  
23
Electrical Conductivity
Not Available  
0.07 106/cm Ω  
28
Electron Affinity
Not Available  
86.10 kJ/mol  
12
Thermal Properties
Specific Heat
Not Available  
0.26 J/(kg K)  
20
Molar Heat Capacity
Not Available  
24.60 J/mol·K  
99+
Thermal Conductivity
Not Available  
53.70 W/m·K  
29
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
Not Available  
7.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available  
696.60 kJ/mol  
4
Enthalpy of Fusion
Not Available  
27.20 kJ/mol  
6
Enthalpy of Atomization
Not Available  
745.00 kJ/mol  
4
Standard Molar Entropy
Not Available  
36.40 J/mol.K  
99+
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