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Bohrium Nobelium Comparison

Bohrium
Nobelium
Nobelium Bohrium comparison


Periodic Table
Symbol
Bh  
No  
Group Number
7  
11
3  
15
Period Number
7  
7  
Block
d block  
f block  
Element Family
Transition Metal  
Actinide  
CAS Number
54037148  
12
10028145  
16
Space Group Name
-  
-  
Space Group Number
276.00  
1
194.00  
7
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • The most stable isotope of Nobelium metal is No-259.
  • No-259 has a half-life of fifty-eight minutes.
  
Sources
Found in Minerals, Mining, Synthetically Produced  
Bombarding Curium-246 or Curium-249 with Carbon-12 Nuclei, Found in Minerals, Mining  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Joint Institute for Nuclear Research  
Discovery
In 1981  
In 1966  
Abundance
  
  
Abundance In Universe
0.00 %  
37
-  
Abundance In Sun
-  
-  
Abundance In Meteorites
0.00 %  
99+
-  
Abundance In Earth's Crust
0.00 %  
99+
-  
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
  • Currently known uses of Nobelium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
Research Purposes  
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
-  
827.00 °C  
99+
Boiling Point
0.00 °C  
99+
2,600.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
-  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
7.00  
3
-  
Brinell Hardness
270.00 MPa  
99+
500.00 MPa  
28
Vickers Hardness
2,700.00 MPa  
4
500.00 MPa  
35
Speed of Sound
2,680.00 m/s  
99+
1,100.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.50  
36
1.30  
99+
Reflectivity
59.00 %  
24
61.00 %  
22
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bh  
No  
Isotopes
  
  
Known Isotopes
5  
32
13  
26
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
1.30  
33
Sanderson Electronegativity
1.30  
25
1.30  
25
Allred Rochow Electronegativity
1.30  
25
1.20  
28
Mulliken-Jaffe Electronegativity
1.30  
33
1.30  
33
Allen Electronegativity
2.00  
6
1.10  
99+
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.70  
22
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
642.00 kJ/mol  
99+
2nd Energy Level
1,688.50 kJ/mol  
31
1,254.00 kJ/mol  
99+
3rd Energy Level
2,566.50 kJ/mol  
99+
2,643.00 kJ/mol  
99+
4th Energy Level
3,598.90 kJ/mol  
99+
3,956.00 kJ/mol  
99+
5th Energy Level
4,727.80 kJ/mol  
99+
6,400.00 kJ/mol  
35
6th Energy Level
5,991.70 kJ/mol  
99+
6,400.00 kJ/mol  
99+
7th Energy level
7,226.80 kJ/mol  
34
6,270.00 kJ/mol  
99+
8th Energy Level
7,100.00 kJ/mol  
33
6,270.00 kJ/mol  
99+
9th Energy Level
5,800.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
10th Energy Level
7,100.00 kJ/mol  
35
6,270.00 kJ/mol  
99+
11th Energy Level
8,200.00 kJ/mol  
25
6,420.00 kJ/mol  
99+
12th Energy Level
82,700.00 kJ/mol  
4
64,000.00 kJ/mol  
8
13th Energy Level
7,100.00 kJ/mol  
29
6,400.00 kJ/mol  
36
14th Energy Level
8,200.00 kJ/mol  
17
6,400.00 kJ/mol  
26
15th Energy Level
82,000.00 kJ/mol  
14
64,000.00 kJ/mol  
36
16th Energy Level
71,100.00 kJ/mol  
20
64,000.00 kJ/mol  
27
17th Energy Level
820.00 kJ/mol  
31
641.00 kJ/mol  
99+
18th Energy Level
8,200.00 kJ/mol  
20
3,500.00 kJ/mol  
99+
19th Energy Level
820.80 kJ/mol  
28
627.60 kJ/mol  
99+
20th Energy Level
820.00 kJ/mol  
21
627.00 kJ/mol  
99+
21st Energy Level
8,200.00 kJ/mol  
11
917.00 kJ/mol  
34
22nd Energy Level
820.00 kJ/mol  
16
627.00 kJ/mol  
36
23rd Energy Level
8,200.00 kJ/mol  
8
6,410.00 kJ/mol  
12
24th Energy Level
820.00 kJ/mol  
12
627.00 kJ/mol  
39
25th Energy Level
820.00 kJ/mol  
10
0.00 kJ/mol  
99+
26th Energy Level
820.00 kJ/mol  
10
601.20 kJ/mol  
99+
27th Energy Level
820.00 kJ/mol  
9
641.00 kJ/mol  
37
28th Energy Level
820.00 kJ/mol  
15
641.60 kJ/mol  
99+
29th Energy Level
820.00 kJ/mol  
14
641.00 kJ/mol  
99+
30th Energy Level
820.00 kJ/mol  
10
627.00 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
4.83 g/amp-hr  
4
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
107  
11
102  
16
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Rn] 5f14 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Not Known  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
Unknown-Crystal-Structure-of-Nobelium.jpg#100  
Atom
  
  
Number of Protons
107  
11
102  
16
Number of Neutrons
155  
9
157  
8
Number of Electrons
107  
11
102  
16
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
176.00 pm  
20
Covalent Radius
141.00 pm  
99+
157.00 pm  
33
Van der Waals Radius
0.00 pm  
99+
246.00 pm  
12
Atomic Weight
270.00 amu  
8
259.00 amu  
13
Atomic Volume
23.70 cm3/mol  
14
19.80 cm3/mol  
33
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Mendelevium
  
Next Element
Hassium
  
Lawrencium
  
Valence Electron Potential
27.20 (-eV)  
99+
26.00 (-eV)  
99+
Lattice Constant
-  
-  
Lattice Angles
-  
-  
Lattice C/A Ratio
1.57  
99+
1.76  
5
Mechanical
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
9.90 g/cm3  
99+
Density When Liquid (at m.p.)
37.10 g/cm3  
3
9.90 g/cm3  
99+
Tensile Strength
152.00 MPa  
24
80.00 MPa  
29
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)  
28
Elasticity properties
  
  
Shear Modulus
28.00 GPa  
32
27.00 GPa  
34
Bulk Modulus
37.00 GPa  
99+
8.70 GPa  
99+
Young's Modulus
0.00 GPa  
99+
12.30 GPa  
99+
Poisson Ratio
0.35  
9
0.30  
14
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.00  
5
9.90  
99+
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
11
0.00 H/m  
3
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
6.50 nΩ·m  
99+
0.68 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
0.10 J/(kg K)  
99+
0.10 J/(kg K)  
99+
Molar Heat Capacity
37.10 J/mol·K  
2
27.00 J/mol·K  
29
Thermal Conductivity
37.00 W/m·K  
36
0.10 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
1,100.00 K  
99+
Thermal Expansion
14.30 µm/(m·K)  
28
11.00 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
270.50 kJ/mol  
99+
-  
Enthalpy of Fusion
-  
-  
Enthalpy of Atomization
-  
390.40 kJ/mol  
30
Standard Molar Entropy
57.00 J/mol.K  
30
63.00 J/mol.K  
24
Summary >>
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