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Bohrium Technetium Comparison

Bohrium
Technetium
Technetium Bohrium comparison


Periodic Table
Symbol
Bh  
Tc  
Group Number
7  
11
7  
11
Period Number
7  
5  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
54037148  
12
7440268  
99+
Space Group Name
-  
P63/mmc  
Space Group Number
276.00  
1
194.00  
7
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
Sources
Found in Minerals, Mining, Synthetically Produced  
Made by Bombarding Molybdenum with Deuterons  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Emilio Segrè and Carlo Perriero  
Discovery
In 1981  
In 1937  
Abundance
  
  
Abundance In Universe
0.00 %  
37
0.00 %  
40
Abundance In Sun
-  
0.00 %  
18
Abundance In Meteorites
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 Bohrium metal are limited to research purpose only.
  
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys, Nuclear Research, Research Purposes  
Biological Properties
  
  
Toxicity
-  
Low Toxic  
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
-  
2,200.00 °C  
9
Boiling Point
0.00 °C  
99+
4,877.00 °C  
7
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Shiny Gray  
Luster
Unknown Luster  
-  
Hardness
  
  
Mohs Hardness
7.00  
3
2.25  
16
Brinell Hardness
270.00 MPa  
99+
550.00 MPa  
27
Vickers Hardness
2,700.00 MPa  
4
500.00 MPa  
35
Speed of Sound
2,680.00 m/s  
99+
16,200.00 m/s  
1
Optical Properties
  
  
Refractive Index
1.50  
36
1.90  
18
Reflectivity
59.00 %  
24
35.00 %  
34
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bh  
Tc  
Isotopes
  
  
Known Isotopes
5  
32
18  
21
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
1.90  
12
Sanderson Electronegativity
1.30  
25
1.90  
13
Allred Rochow Electronegativity
1.30  
25
1.36  
21
Mulliken-Jaffe Electronegativity
1.30  
33
1.90  
13
Allen Electronegativity
2.00  
6
1.51  
31
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.10  
99+
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
702.00 kJ/mol  
36
2nd Energy Level
1,688.50 kJ/mol  
31
1,470.00 kJ/mol  
99+
3rd Energy Level
2,566.50 kJ/mol  
99+
2,850.00 kJ/mol  
34
4th Energy Level
3,598.90 kJ/mol  
99+
7,020.00 kJ/mol  
14
5th Energy Level
4,727.80 kJ/mol  
99+
7,020.00 kJ/mol  
28
6th Energy Level
5,991.70 kJ/mol  
99+
7,020.00 kJ/mol  
99+
7th Energy level
7,226.80 kJ/mol  
34
4,700.00 kJ/mol  
99+
8th Energy Level
7,100.00 kJ/mol  
33
4,700.00 kJ/mol  
99+
9th Energy Level
5,800.00 kJ/mol  
99+
7,020.00 kJ/mol  
35
10th Energy Level
7,100.00 kJ/mol  
35
7,020.00 kJ/mol  
39
11th Energy Level
8,200.00 kJ/mol  
25
7,020.00 kJ/mol  
37
12th Energy Level
82,700.00 kJ/mol  
4
7,020.00 kJ/mol  
99+
13th Energy Level
7,100.00 kJ/mol  
29
7,020.00 kJ/mol  
33
14th Energy Level
8,200.00 kJ/mol  
17
7,020.00 kJ/mol  
23
15th Energy Level
82,000.00 kJ/mol  
14
70,200.00 kJ/mol  
29
16th Energy Level
71,100.00 kJ/mol  
20
70,200.00 kJ/mol  
24
17th Energy Level
820.00 kJ/mol  
31
702.50 kJ/mol  
99+
18th Energy Level
8,200.00 kJ/mol  
20
7,020.00 kJ/mol  
35
19th Energy Level
820.80 kJ/mol  
28
702.00 kJ/mol  
99+
20th Energy Level
820.00 kJ/mol  
21
702.00 kJ/mol  
35
21st Energy Level
8,200.00 kJ/mol  
11
702.00 kJ/mol  
99+
22nd Energy Level
820.00 kJ/mol  
16
702.00 kJ/mol  
29
23rd Energy Level
8,200.00 kJ/mol  
8
702.00 kJ/mol  
99+
24th Energy Level
820.00 kJ/mol  
12
702.50 kJ/mol  
28
25th Energy Level
820.00 kJ/mol  
10
702.00 kJ/mol  
30
26th Energy Level
820.00 kJ/mol  
10
702.00 kJ/mol  
29
27th Energy Level
820.00 kJ/mol  
9
702.00 kJ/mol  
30
28th Energy Level
820.00 kJ/mol  
15
702.00 kJ/mol  
35
29th Energy Level
820.00 kJ/mol  
14
702.00 kJ/mol  
36
30th Energy Level
820.00 kJ/mol  
10
702.00 kJ/mol  
30
Electrochemical Equivalent
3.00 g/amp-hr  
21
0.52 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes  
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
107  
11
43  
99+
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Kr] 4d5 5s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
HCP-Crystal-Structure-of-Technetium.jpg#100  
Atom
  
  
Number of Protons
107  
11
43  
99+
Number of Neutrons
155  
9
55  
99+
Number of Electrons
107  
11
43  
99+
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
136.00 pm  
99+
Covalent Radius
141.00 pm  
99+
147.00 pm  
39
Van der Waals Radius
0.00 pm  
99+
200.00 pm  
35
Atomic Weight
270.00 amu  
8
98.00 amu  
99+
Atomic Volume
23.70 cm3/mol  
14
8.50 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Molybdenum
  
Next Element
Hassium
  
Ruthenium
  
Valence Electron Potential
27.20 (-eV)  
99+
180.00 (-eV)  
3
Lattice Constant
-  
273.50 pm  
99+
Lattice Angles
-  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.57  
99+
1.60  
21
Mechanical
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
11.00 g/cm3  
36
Density When Liquid (at m.p.)
37.10 g/cm3  
3
11.00 g/cm3  
34
Tensile Strength
152.00 MPa  
24
50.00 MPa  
38
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)  
99+
Elasticity properties
  
  
Shear Modulus
28.00 GPa  
32
27.00 GPa  
34
Bulk Modulus
37.00 GPa  
99+
100.00 GPa  
16
Young's Modulus
0.00 GPa  
99+
50.00 GPa  
39
Poisson Ratio
0.35  
9
0.38  
6
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.00  
5
11.50  
37
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
6.50 nΩ·m  
99+
200.00 nΩ·m  
18
Electrical Conductivity
0.00 106/cm Ω  
99+
0.07 106/cm Ω  
35
Electron Affinity
-  
53.00 kJ/mol  
23
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.21 J/(kg K)  
30
Molar Heat Capacity
37.10 J/mol·K  
2
24.27 J/mol·K  
99+
Thermal Conductivity
37.00 W/m·K  
36
50.60 W/m·K  
30
Critical Temperature
1,323.00 K  
99+
2,150.00 K  
16
Thermal Expansion
14.30 µm/(m·K)  
28
7.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
270.50 kJ/mol  
99+
660.00 kJ/mol  
7
Enthalpy of Fusion
-  
23.01 kJ/mol  
9
Enthalpy of Atomization
-  
649.00 kJ/mol  
9
Standard Molar Entropy
57.00 J/mol.K  
30
181.10 J/mol.K  
2
Summary >>
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