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Flerovium vs Bohrium

Flerovium
Bohrium
Bohrium vs Flerovium


Periodic Table
Symbol
Fl  
Bh  
Group Number
14  
4
7  
11
Period Number
7  
7  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
54085164  
5
54037148  
12
Space Group Name
-  
-  
Space Group Number
198.00  
6
276.00  
1
Facts
Interesting Facts
Flerovium is named after the Flerov Laboratory of Nuclear Reactions.  
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
Sources
-  
Found in Minerals, Mining, Synthetically Produced  
History
  
  
Who Discovered
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory  
Gesellschaft für Schwerionenforschung  
Discovery
In 1999  
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+
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Flerovium 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
Alloys, 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
67.00 °C  
99+
-  
Boiling Point
147.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
-  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
4.00  
11
7.00  
3
Brinell Hardness
350.00 MPa  
36
270.00 MPa  
99+
Vickers Hardness
450.00 MPa  
38
2,700.00 MPa  
4
Speed of Sound
3,200.00 m/s  
35
2,680.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.50  
36
Reflectivity
68.00 %  
15
59.00 %  
24
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Fl  
Bh  
Isotopes
  
  
Known Isotopes
1  
34
5  
32
Electronegativity
  
  
Pauling Electronegativity
2.60  
1
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
823.90 kJ/mol  
13
742.90 kJ/mol  
23
2nd Energy Level
1,601.60 kJ/mol  
35
1,688.50 kJ/mol  
31
3rd Energy Level
3,367.30 kJ/mol  
18
2,566.50 kJ/mol  
99+
4th Energy Level
4,399.70 kJ/mol  
37
3,598.90 kJ/mol  
99+
5th Energy Level
5,847.00 kJ/mol  
99+
4,727.80 kJ/mol  
99+
6th Energy Level
11,400.00 kJ/mol  
9
5,991.70 kJ/mol  
99+
7th Energy level
5,400.00 kJ/mol  
99+
7,226.80 kJ/mol  
34
8th Energy Level
6,700.00 kJ/mol  
39
7,100.00 kJ/mol  
33
9th Energy Level
5,840.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
10th Energy Level
6,000.00 kJ/mol  
99+
7,100.00 kJ/mol  
35
11th Energy Level
6,000.00 kJ/mol  
99+
8,200.00 kJ/mol  
25
12th Energy Level
36,400.00 kJ/mol  
24
82,700.00 kJ/mol  
4
13th Energy Level
5,400.00 kJ/mol  
99+
7,100.00 kJ/mol  
29
14th Energy Level
1,145.00 kJ/mol  
99+
8,200.00 kJ/mol  
17
15th Energy Level
67,000.00 kJ/mol  
33
82,000.00 kJ/mol  
14
16th Energy Level
36,400.00 kJ/mol  
99+
71,100.00 kJ/mol  
20
17th Energy Level
1,144.00 kJ/mol  
17
820.00 kJ/mol  
31
18th Energy Level
3,400.00 kJ/mol  
99+
8,200.00 kJ/mol  
20
19th Energy Level
1,127.50 kJ/mol  
16
820.80 kJ/mol  
28
20th Energy Level
800.00 kJ/mol  
24
820.00 kJ/mol  
21
21st Energy Level
670.00 kJ/mol  
99+
8,200.00 kJ/mol  
11
22nd Energy Level
340.00 kJ/mol  
99+
820.00 kJ/mol  
16
23rd Energy Level
1,120.00 kJ/mol  
34
8,200.00 kJ/mol  
8
24th Energy Level
540.10 kJ/mol  
99+
820.00 kJ/mol  
12
25th Energy Level
0.00 kJ/mol  
99+
820.00 kJ/mol  
10
26th Energy Level
540.10 kJ/mol  
99+
820.00 kJ/mol  
10
27th Energy Level
540.00 kJ/mol  
99+
820.00 kJ/mol  
9
28th Energy Level
800.00 kJ/mol  
18
820.00 kJ/mol  
15
29th Energy Level
800.10 kJ/mol  
17
820.00 kJ/mol  
14
30th Energy Level
0.00 kJ/mol  
99+
820.00 kJ/mol  
10
Electrochemical Equivalent
3.00 g/amp-hr  
21
3.00 g/amp-hr  
21
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes  
Atomic
Atomic Number
114  
4
107  
11
Electron Configuration
[Rn] 5f14 6d10 7s2 7p2  
[Rn] 5f14 6d5 7s2  
Crystal Structure
Not Known  
Hexagonal Close Packed (HCP)  
Crystal Lattice
Unknown-Crystal-Structure-of-Flerovium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
114  
4
107  
11
Number of Neutrons
184  
2
155  
9
Number of Electrons
114  
4
107  
11
Radius of an Atom
  
  
Atomic Radius
180.00 pm  
16
128.00 pm  
99+
Covalent Radius
171.00 pm  
26
141.00 pm  
99+
Van der Waals Radius
0.00 pm  
99+
0.00 pm  
99+
Atomic Weight
289.00 amu  
3
270.00 amu  
8
Atomic Volume
14.00 cm3/mol  
99+
23.70 cm3/mol  
14
Adjacent Atomic Numbers
  
  
Previous Element
Nihonium
  
Seaborgium
  
Next Element
Moscovium
  
Hassium
  
Valence Electron Potential
0.00 (-eV)  
99+
27.20 (-eV)  
99+
Lattice Constant
-  
-  
Lattice Angles
-  
-  
Lattice C/A Ratio
1.60  
22
1.57  
99+
Mechanical
Density
  
  
Density At Room Temperature
14.00 g/cm3  
24
37.10 g/cm3  
3
Density When Liquid (at m.p.)
14.00 g/cm3  
24
37.10 g/cm3  
3
Tensile Strength
0.10 MPa  
99+
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)  
30
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
35.00 GPa  
21
28.00 GPa  
32
Bulk Modulus
15.00 GPa  
99+
37.00 GPa  
99+
Young's Modulus
0.00 GPa  
99+
0.00 GPa  
99+
Poisson Ratio
0.30  
14
0.35  
9
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
14.00  
25
37.00  
5
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
15
0.00 H/m  
11
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
5.40 nΩ·m  
99+
6.50 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
-  
-  
Thermal
Specific Heat
0.10 J/(kg K)  
99+
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
340.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
7.10 µm/(m·K)  
99+
14.30 µm/(m·K)  
28
Enthalpy
  
  
Enthalpy of Vaporization
337.40 kJ/mol  
38
270.50 kJ/mol  
99+
Enthalpy of Fusion
14.50 kJ/mol  
26
-  
Enthalpy of Atomization
-  
-  
Standard Molar Entropy
57.00 J/mol.K  
30
57.00 J/mol.K  
30
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