Home
 Compare Metals

Lawrencium vs Bohrium

Lawrencium
Bohrium
Bohrium vs Lawrencium


Periodic Table
Symbol
Lr  
Bh  
Group Number
3  
15
7  
11
Period Number
7  
7  
Block
d block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
22537195  
15
54037148  
12
Space Group Name
-  
-  
Space Group Number
225.00  
3
276.00  
1
Facts
Interesting Facts
  • It is synthetically produced metal.
  • Radiation hazard can be produce by it.
  
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
Sources
Bombarding Californium-252 with Boron Nuclei, Found in Minerals, Mining  
Found in Minerals, Mining, Synthetically Produced  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research  
Gesellschaft für Schwerionenforschung  
Discovery
In 1961–1971  
In 1981  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
37
Abundance In Sun
-  
-  
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Lawrencium metal are limited to research purpose only.
  
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
-  
Research Purposes  
Biological Properties
  
  
Toxicity
-  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
1,627.00 °C  
20
-  
Boiling Point
0.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
-  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
-  
7.00  
3
Brinell Hardness
500.00 MPa  
28
270.00 MPa  
99+
Vickers Hardness
500.00 MPa  
35
2,700.00 MPa  
4
Speed of Sound
2,760.00 m/s  
99+
2,680.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.50  
36
Reflectivity
65.00 %  
18
59.00 %  
24
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Lr  
Bh  
Isotopes
  
  
Known Isotopes
10  
28
5  
32
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
2.00  
8
Sanderson Electronegativity
1.30  
25
1.30  
25
Allred Rochow Electronegativity
1.30  
25
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
1.30  
33
Allen Electronegativity
1.30  
40
2.00  
6
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.00  
99+
Ionization Energies
  
  
1st Energy Level
470.00 kJ/mol  
99+
742.90 kJ/mol  
23
2nd Energy Level
1,428.00 kJ/mol  
99+
1,688.50 kJ/mol  
31
3rd Energy Level
2,228.00 kJ/mol  
99+
2,566.50 kJ/mol  
99+
4th Energy Level
4,910.00 kJ/mol  
31
3,598.90 kJ/mol  
99+
5th Energy Level
4,780.00 kJ/mol  
99+
4,727.80 kJ/mol  
99+
6th Energy Level
4,780.00 kJ/mol  
99+
5,991.70 kJ/mol  
99+
7th Energy level
4,780.00 kJ/mol  
99+
7,226.80 kJ/mol  
34
8th Energy Level
4,780.00 kJ/mol  
99+
7,100.00 kJ/mol  
33
9th Energy Level
4,780.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
7,100.00 kJ/mol  
35
11th Energy Level
5,800.00 kJ/mol  
99+
8,200.00 kJ/mol  
25
12th Energy Level
47,800.00 kJ/mol  
22
82,700.00 kJ/mol  
4
13th Energy Level
4,780.00 kJ/mol  
99+
7,100.00 kJ/mol  
29
14th Energy Level
1,186.00 kJ/mol  
99+
8,200.00 kJ/mol  
17
15th Energy Level
47,800.00 kJ/mol  
99+
82,000.00 kJ/mol  
14
16th Energy Level
470.00 kJ/mol  
99+
71,100.00 kJ/mol  
20
17th Energy Level
1,186.00 kJ/mol  
15
820.00 kJ/mol  
31
18th Energy Level
4,780.00 kJ/mol  
99+
8,200.00 kJ/mol  
20
19th Energy Level
1,186.00 kJ/mol  
12
820.80 kJ/mol  
28
20th Energy Level
860.00 kJ/mol  
17
820.00 kJ/mol  
21
21st Energy Level
1,186.00 kJ/mol  
27
8,200.00 kJ/mol  
11
22nd Energy Level
388.00 kJ/mol  
99+
820.00 kJ/mol  
16
23rd Energy Level
1,180.00 kJ/mol  
32
8,200.00 kJ/mol  
8
24th Energy Level
546.10 kJ/mol  
99+
820.00 kJ/mol  
12
25th Energy Level
0.00 kJ/mol  
99+
820.00 kJ/mol  
10
26th Energy Level
594.70 kJ/mol  
99+
820.00 kJ/mol  
10
27th Energy Level
470.00 kJ/mol  
99+
820.00 kJ/mol  
9
28th Energy Level
478.00 kJ/mol  
99+
820.00 kJ/mol  
15
29th Energy Level
580.00 kJ/mol  
99+
820.00 kJ/mol  
14
30th Energy Level
0.00 kJ/mol  
99+
820.00 kJ/mol  
10
Electrochemical Equivalent
3.23 g/amp-hr  
12
3.00 g/amp-hr  
21
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes  
Atomic
Atomic Number
103  
15
107  
11
Electron Configuration
[Rn] 5f14 7s2 7p1  
[Rn] 5f14 6d5 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
103  
15
107  
11
Number of Neutrons
157  
8
155  
9
Number of Electrons
103  
15
107  
11
Radius of an Atom
  
  
Atomic Radius
162.00 pm  
28
128.00 pm  
99+
Covalent Radius
162.00 pm  
31
141.00 pm  
99+
Van der Waals Radius
246.00 pm  
12
0.00 pm  
99+
Atomic Weight
266.00 amu  
12
270.00 amu  
8
Atomic Volume
35.10 cm3/mol  
7
23.70 cm3/mol  
14
Adjacent Atomic Numbers
  
  
Previous Element
Nobelium
  
Seaborgium
  
Next Element
Rutherfordium
  
Hassium
  
Valence Electron Potential
0.00 (-eV)  
99+
27.20 (-eV)  
99+
Lattice Constant
530.00 pm  
14
-  
Lattice Angles
-  
-  
Lattice C/A Ratio
1.60  
22
1.57  
99+
Mechanical
Density
  
  
Density At Room Temperature
15.00 g/cm3  
22
37.10 g/cm3  
3
Density When Liquid (at m.p.)
15.60 g/cm3  
20
37.10 g/cm3  
3
Tensile Strength
80.00 MPa  
29
152.00 MPa  
24
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
28.00 GPa  
32
Bulk Modulus
15.00 GPa  
99+
37.00 GPa  
99+
Young's Modulus
210.00 GPa  
10
0.00 GPa  
99+
Poisson Ratio
0.32  
12
0.35  
9
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
15.60  
22
37.00  
5
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
13
0.00 H/m  
11
Susceptibility
0.00  
23
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
8.37 nΩ·m  
99+
6.50 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
-  
Thermal
Specific Heat
0.22 J/(kg K)  
29
0.10 J/(kg K)  
99+
Molar Heat Capacity
27.00 J/mol·K  
29
37.10 J/mol·K  
2
Thermal Conductivity
0.00 W/m·K  
99+
37.00 W/m·K  
36
Critical Temperature
1,323.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
8.50 µm/(m·K)  
99+
14.30 µm/(m·K)  
28
Enthalpy
  
  
Enthalpy of Vaporization
341.90 kJ/mol  
37
270.50 kJ/mol  
99+
Enthalpy of Fusion
-  
-  
Enthalpy of Atomization
580.00 kJ/mol  
14
-  
Standard Molar Entropy
54.80 J/mol.K  
35
57.00 J/mol.K  
30
Periodic Table >>
<< All

Compare Actinide Series

Actinide Series

Actinide Series

» More Actinide Series

Compare Actinide Series

» More Compare Actinide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!