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Bohrium Radium Comparison

Bohrium
Radium
Radium Bohrium comparison


Periodic Table
Symbol
Bh  
Ra  
Group Number
7  
11
2  
16
Period Number
7  
7  
Block
d block  
s block  
Element Family
Transition Metal  
Alkaline Earth  
CAS Number
54037148  
12
7440144  
99+
Space Group Name
-  
Im_ 3m  
Space Group Number
276.00  
1
229.00  
2
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
Sources
Found in Minerals, Mining, Synthetically Produced  
Mining, Ores of metals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
-  
Discovery
In 1981  
In 1898  
Abundance
  
  
Abundance In Universe
0.00 %  
37
0.00 %  
40
Abundance In Sun
-  
0.00 %  
26
Abundance In Meteorites
0.00 %  
99+
-  
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
0.00 %  
99+
Abundance In Humans
-  
0.00 %  
23
Uses
Uses & Benefits
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
Industrial Uses
-  
-  
Medical Uses
-  
Pharmaceutical Industry  
Other Uses
Research Purposes  
-  
Biological Properties
  
  
Toxicity
-  
Highly Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
34
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
-  
700.00 °C  
99+
Boiling Point
0.00 °C  
99+
1,737.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silvery White  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
7.00  
3
1.00  
22
Brinell Hardness
270.00 MPa  
99+
700.00 MPa  
17
Vickers Hardness
2,700.00 MPa  
4
140.00 MPa  
99+
Speed of Sound
2,680.00 m/s  
99+
3,150.00 m/s  
37
Optical Properties
  
  
Refractive Index
1.50  
36
1.00  
99+
Reflectivity
59.00 %  
24
83.00 %  
6
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bh  
Ra  
Isotopes
  
  
Known Isotopes
5  
32
33  
6
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
0.90  
99+
Sanderson Electronegativity
1.30  
25
0.89  
99+
Allred Rochow Electronegativity
1.30  
25
0.97  
39
Mulliken-Jaffe Electronegativity
1.30  
33
0.92  
99+
Allen Electronegativity
2.00  
6
0.89  
99+
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
3.10  
5
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
509.30 kJ/mol  
99+
2nd Energy Level
1,688.50 kJ/mol  
31
979.00 kJ/mol  
99+
3rd Energy Level
2,566.50 kJ/mol  
99+
509.30 kJ/mol  
99+
4th Energy Level
3,598.90 kJ/mol  
99+
5,093.00 kJ/mol  
27
5th Energy Level
4,727.80 kJ/mol  
99+
5,090.00 kJ/mol  
99+
6th Energy Level
5,991.70 kJ/mol  
99+
5,090.00 kJ/mol  
99+
7th Energy level
7,226.80 kJ/mol  
34
5,090.00 kJ/mol  
99+
8th Energy Level
7,100.00 kJ/mol  
33
5,090.00 kJ/mol  
99+
9th Energy Level
5,800.00 kJ/mol  
99+
5,090.00 kJ/mol  
99+
10th Energy Level
7,100.00 kJ/mol  
35
5,090.00 kJ/mol  
99+
11th Energy Level
8,200.00 kJ/mol  
25
5,090.00 kJ/mol  
99+
12th Energy Level
82,700.00 kJ/mol  
4
5,090.00 kJ/mol  
99+
13th Energy Level
7,100.00 kJ/mol  
29
5,090.00 kJ/mol  
99+
14th Energy Level
8,200.00 kJ/mol  
17
5,090.00 kJ/mol  
99+
15th Energy Level
82,000.00 kJ/mol  
14
50,900.00 kJ/mol  
99+
16th Energy Level
71,100.00 kJ/mol  
20
50,900.00 kJ/mol  
99+
17th Energy Level
820.00 kJ/mol  
31
509.30 kJ/mol  
99+
18th Energy Level
8,200.00 kJ/mol  
20
5,090.00 kJ/mol  
99+
19th Energy Level
820.80 kJ/mol  
28
509.30 kJ/mol  
99+
20th Energy Level
820.00 kJ/mol  
21
509.00 kJ/mol  
99+
21st Energy Level
8,200.00 kJ/mol  
11
509.30 kJ/mol  
99+
22nd Energy Level
820.00 kJ/mol  
16
509.00 kJ/mol  
99+
23rd Energy Level
8,200.00 kJ/mol  
8
509.30 kJ/mol  
99+
24th Energy Level
820.00 kJ/mol  
12
509.30 kJ/mol  
99+
25th Energy Level
820.00 kJ/mol  
10
509.00 kJ/mol  
99+
26th Energy Level
820.00 kJ/mol  
10
509.30 kJ/mol  
99+
27th Energy Level
820.00 kJ/mol  
9
509.30 kJ/mol  
99+
28th Energy Level
820.00 kJ/mol  
15
509.30 kJ/mol  
99+
29th Energy Level
820.00 kJ/mol  
14
509.30 kJ/mol  
99+
30th Energy Level
820.00 kJ/mol  
10
509.00 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
4.22 g/amp-hr  
6
Electron Work Function
4.90 eV  
12
4.30 eV  
25
Other Chemical Properties
Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
107  
11
88  
30
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Rn] 7s2  
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
88  
30
Number of Neutrons
155  
9
138  
17
Number of Electrons
107  
11
88  
30
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
215.00 pm  
6
Covalent Radius
141.00 pm  
99+
221.00 pm  
3
Van der Waals Radius
0.00 pm  
99+
283.00 pm  
5
Atomic Weight
270.00 amu  
8
226.00 amu  
26
Atomic Volume
23.70 cm3/mol  
14
45.20 cm3/mol  
5
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Francium
  
Next Element
Hassium
  
Actinium
  
Valence Electron Potential
27.20 (-eV)  
99+
20.10 (-eV)  
99+
Lattice Constant
-  
514.80 pm  
15
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.57  
99+
1.57  
99+
Mechanical
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
5.50 g/cm3  
99+
Density When Liquid (at m.p.)
37.10 g/cm3  
3
5.50 g/cm3  
99+
Tensile Strength
152.00 MPa  
24
40.00 MPa  
99+
Viscosity
0.00  
25
0.00  
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
33
Elasticity properties
  
  
Shear Modulus
28.00 GPa  
32
25.00 GPa  
38
Bulk Modulus
37.00 GPa  
99+
43.00 GPa  
33
Young's Modulus
0.00 GPa  
99+
83.00 GPa  
25
Poisson Ratio
0.35  
9
0.31  
13
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.00  
5
5.00  
99+
Magnetic Ordering
-  
Nonmagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
9
Susceptibility
0.00  
24
0.00  
18
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
6.50 nΩ·m  
99+
100.00 nΩ·m  
31
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
-  
0.90 kJ/mol  
99+
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.12 J/(kg K)  
99+
Molar Heat Capacity
37.10 J/mol·K  
2
20.05 J/mol·K  
99+
Thermal Conductivity
37.00 W/m·K  
36
18.60 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
973.00 K  
99+
Thermal Expansion
14.30 µm/(m·K)  
28
8.50 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
270.50 kJ/mol  
99+
113.00 kJ/mol  
99+
Enthalpy of Fusion
-  
8.60 kJ/mol  
99+
Enthalpy of Atomization
-  
163.00 kJ/mol  
99+
Standard Molar Entropy
57.00 J/mol.K  
30
71.00 J/mol.K  
14
Summary >>
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