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Zirconium vs Bohrium

Zirconium
Bohrium
Bohrium vs Zirconium


Periodic Table
Symbol
Zr  
Bh  
Group Number
4  
14
7  
11
Period Number
5  
7  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440677  
23
54037148  
12
Space Group Name
P63/mmc  
Not Available  
Space Group Number
194.00  
5
Not Available  
Facts
Interesting Facts
  • Zirconium metal can resist to weak acids.
  • Zirconium metal reacts with oxygen and nitrogen in the atmosphere.
  
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Synthetically Produced  
History
  
  
Who Discovered
Martin Heinrich Klaproth  
Gesellschaft für Schwerionenforschung  
Discovery
In 1789  
In 1981  
Abundance
  
  
Abundance In Universe
5 * 10-6 %  
13
Not Available  
Abundance In Sun
~0.000004 %  
16
~-9999 %  
Abundance In Meteorites
0.00 %  
17
Not Available  
Abundance In Earth's Crust
0.01 %  
14
Not Available  
Abundance In Oceans
0.00 %  
23
Not Available  
Abundance In Humans
0.00 %  
15
Not Available  
Uses
Uses & Benefits
  • As this metal does not absorb neutrons; It is used in nuclear power stations.
  • Its oxide is used in ultra strong ceramics. It is also used in manufacturing Crucibles.
  
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
Industrial Uses
Aerospace Industry, Ammunition Industry  
NA  
Medical Uses
NA  
NA  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Research Purposes  
Biological Properties
  
  
Toxicity
NA  
Unknown  
Present in Human Body
Yes  
No  
In Blood
0.01 Blood/mg dm-3  
21
0.00 Blood/mg dm-3  
37
In Bone
0.10 p.p.m.  
23
0.00 p.p.m.  
36
Physical Properties
Melting Point
1,852.00 °C  
15
Not Available  
Boiling Point
4,377.00 °C  
11
Not Available  
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Unknown  
Luster
Lustrous  
Unknown Luster  
Hardness
  
  
Mohs Hardness
5.00  
8
Not Available  
Brinell Hardness
638.00 MPa  
19
Not Available  
Vickers Hardness
820.00 MPa  
15
Not Available  
Speed of Sound
3,800.00 m/s  
20
Not Available  
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
Zr  
Bh  
Isotopes
  
  
Known Isotopes
24  
15
5  
32
Electronegativity
  
  
Pauling Electronegativity
1.33  
30
Not Available  
Sanderson Electronegativity
0.90  
25
Not Available  
Allred Rochow Electronegativity
1.22  
26
Not Available  
Allen Electronegativity
1.32  
34
Not Available  
Electropositivity
  
  
Pauling Electropositivity
2.67  
24
Not Available  
Ionization Energies
  
  
1st Energy Level
640.10 kJ/mol  
99+
742.90 kJ/mol  
23
2nd Energy Level
1,270.00 kJ/mol  
99+
1,688.50 kJ/mol  
30
3rd Energy Level
2,218.00 kJ/mol  
99+
2,566.50 kJ/mol  
99+
4th Energy Level
3,313.00 kJ/mol  
99+
3,598.90 kJ/mol  
99+
5th Energy Level
7,752.00 kJ/mol  
10
4,727.80 kJ/mol  
37
6th Energy Level
9,500.00 kJ/mol  
15
5,991.70 kJ/mol  
24
7th Energy level
Not Available  
7,226.80 kJ/mol  
22
Electrochemical Equivalent
0.85 g/amp-hr  
99+
Not Available  
Electron Work Function
4.05 eV  
26
Not Available  
Other Chemical Properties
Anti Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes  
Atomic Properties
Atomic Number
40  
99+
107  
11
Electron Configuration
[Kr] 4d2 5s2  
[Rn] 5f14 6d5 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Zirconium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
40  
99+
107  
11
Number of Neutrons
51  
99+
155  
8
Number of Electrons
40  
99+
107  
11
Radius of an Atom
  
  
Atomic Radius
160.00 pm  
27
128.00 pm  
99+
Covalent Radius
175.00 pm  
23
141.00 pm  
99+
Van der Waals Radius
200.00 pm  
28
Not Available  
Atomic Weight
91.22 amu  
99+
270.00 amu  
8
Atomic Volume
14.10 cm3/mol  
36
Not Available  
Adjacent Atomic Numbers
  
  
Previous Element
Yttrium
  
Seaborgium
  
Next Element
Niobium
  
Hassium
  
Valence Electron Potential
80.00 (-eV)  
18
Not Available  
Lattice Constant
323.20 pm  
99+
Not Available  
Lattice Angles
π/2, π/2, 2 π/3  
NA  
Lattice C/A Ratio
1.59  
8
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
6.52 g/cm3  
99+
37.10 g/cm3  
3
Density When Liquid (at m.p.)
5.80 g/cm3  
99+
Not Available  
Tensile Strength
330.00 MPa  
12
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.00 (Pa)  
21
Not Available  
Elasticity properties
  
  
Shear Modulus
33.00 GPa  
20
Not Available  
Bulk Modulus
91.10 GPa  
17
Not Available  
Young's Modulus
88.00 GPa  
22
Not Available  
Poisson Ratio
0.34  
10
Not Available  
Other Mechanical Properties
Ductile, Malleable  
Unknown  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
6.51  
99+
Not Available  
Magnetic Ordering
Paramagnetic  
Unknown  
Electrical Properties
  
  
Electrical Property
Conductor  
Unknown  
Resistivity
421.00 nΩ·m  
11
Not Available  
Electrical Conductivity
0.02 106/cm Ω  
99+
Not Available  
Electron Affinity
41.10 kJ/mol  
27
Not Available  
Thermal Properties
Specific Heat
0.27 J/(kg K)  
19
Not Available  
Molar Heat Capacity
25.36 J/mol·K  
99+
Not Available  
Thermal Conductivity
22.60 W/m·K  
99+
Not Available  
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
5.70 µm/(m·K)  
99+
Not Available  
Enthalpy
  
  
Enthalpy of Vaporization
581.60 kJ/mol  
9
Not Available  
Enthalpy of Fusion
20.90 kJ/mol  
11
Not Available  
Enthalpy of Atomization
598.00 kJ/mol  
10
Not Available  
Standard Molar Entropy
39.00 J/mol.K  
39
Not Available  
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