Home
 Compare Metals

Technetium Osmium Comparison

Technetium
Osmium
Osmium Technetium comparison


Periodic Table
Symbol
Tc  
Os  
Group Number
7  
11
8  
10
Period Number
5  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440268  
99+
7440042  
99+
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
  
Sources
Made by Bombarding Molybdenum with Deuterons  
Found As a By-product, Found in Minerals, Mining  
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero  
Smithson Tennant  
Discovery
In 1937  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
22
Abundance In Sun
0.00 %  
18
0.00 %  
25
Abundance In Meteorites
-  
0.00 %  
28
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
0.00 %  
99+
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
  • Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
  • It is also used as industrial catalyst to speed up the chemical reaction.
  
Industrial Uses
-  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Highly Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
2,200.00 °C  
9
3,045.00 °C  
3
Boiling Point
4,877.00 °C  
7
5,027.00 °C  
6
Appearance
  
  
Physical State
Solid  
Solid  
Color
Shiny Gray  
Silvery Bluish-Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.25  
16
7.00  
3
Brinell Hardness
550.00 MPa  
27
3,490.00 MPa  
1
Vickers Hardness
500.00 MPa  
35
3,920.00 MPa  
1
Speed of Sound
16,200.00 m/s  
1
4,940.00 m/s  
15
Optical Properties
  
  
Refractive Index
1.90  
18
2.07  
12
Reflectivity
35.00 %  
34
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Tc  
Os  
Isotopes
  
  
Known Isotopes
18  
21
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.90  
12
2.20  
5
Sanderson Electronegativity
1.90  
13
2.20  
8
Allred Rochow Electronegativity
1.36  
21
1.52  
13
Mulliken-Jaffe Electronegativity
1.90  
13
2.20  
6
Allen Electronegativity
1.51  
31
1.65  
22
Electropositivity
  
  
Pauling Electropositivity
2.10  
99+
1.80  
99+
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol  
36
840.00 kJ/mol  
12
2nd Energy Level
1,470.00 kJ/mol  
99+
1,309.80 kJ/mol  
99+
3rd Energy Level
2,850.00 kJ/mol  
34
1,600.00 kJ/mol  
99+
4th Energy Level
7,020.00 kJ/mol  
14
840.00 kJ/mol  
99+
5th Energy Level
7,020.00 kJ/mol  
28
8,400.00 kJ/mol  
10
6th Energy Level
7,020.00 kJ/mol  
99+
8,400.00 kJ/mol  
30
7th Energy level
4,700.00 kJ/mol  
99+
8,400.00 kJ/mol  
25
8th Energy Level
4,700.00 kJ/mol  
99+
8,400.00 kJ/mol  
25
9th Energy Level
7,020.00 kJ/mol  
35
5,280.00 kJ/mol  
99+
10th Energy Level
7,020.00 kJ/mol  
39
8,400.00 kJ/mol  
26
11th Energy Level
7,020.00 kJ/mol  
37
8,400.00 kJ/mol  
23
12th Energy Level
7,020.00 kJ/mol  
99+
8,400.00 kJ/mol  
99+
13th Energy Level
7,020.00 kJ/mol  
33
8,400.00 kJ/mol  
18
14th Energy Level
7,020.00 kJ/mol  
23
840.00 kJ/mol  
99+
15th Energy Level
70,200.00 kJ/mol  
29
84,000.00 kJ/mol  
12
16th Energy Level
70,200.00 kJ/mol  
24
840.00 kJ/mol  
99+
17th Energy Level
702.50 kJ/mol  
99+
840.00 kJ/mol  
29
18th Energy Level
7,020.00 kJ/mol  
35
8,400.00 kJ/mol  
18
19th Energy Level
702.00 kJ/mol  
99+
840.00 kJ/mol  
27
20th Energy Level
702.00 kJ/mol  
35
840.00 kJ/mol  
19
21st Energy Level
702.00 kJ/mol  
99+
840.00 kJ/mol  
39
22nd Energy Level
702.00 kJ/mol  
29
840.00 kJ/mol  
15
23rd Energy Level
702.00 kJ/mol  
99+
840.00 kJ/mol  
99+
24th Energy Level
702.50 kJ/mol  
28
840.00 kJ/mol  
11
25th Energy Level
702.00 kJ/mol  
30
840.00 kJ/mol  
9
26th Energy Level
702.00 kJ/mol  
29
840.00 kJ/mol  
9
27th Energy Level
702.00 kJ/mol  
30
713.30 kJ/mol  
24
28th Energy Level
702.00 kJ/mol  
35
840.10 kJ/mol  
13
29th Energy Level
702.00 kJ/mol  
36
840.00 kJ/mol  
13
30th Energy Level
702.00 kJ/mol  
30
840.00 kJ/mol  
9
Electrochemical Equivalent
0.52 g/amp-hr  
99+
1.77 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.83 eV  
13
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
43  
99+
76  
40
Electron Configuration
[Kr] 4d5 5s2  
[Xe] 4f14 5d6 6s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
43  
99+
76  
39
Number of Neutrons
55  
99+
114  
26
Number of Electrons
43  
99+
76  
39
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
133.80 pm  
99+
Covalent Radius
147.00 pm  
39
128.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
216.00 pm  
30
Atomic Weight
98.00 amu  
99+
190.23 amu  
35
Atomic Volume
8.50 cm3/mol  
99+
8.49 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Rhenium
  
Next Element
Ruthenium
  
Iridium
  
Valence Electron Potential
180.00 (-eV)  
3
91.40 (-eV)  
12
Lattice Constant
273.50 pm  
99+
273.44 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.60  
21
1.58  
37
Mechanical
Density
  
  
Density At Room Temperature
11.00 g/cm3  
36
22.59 g/cm3  
9
Density When Liquid (at m.p.)
11.00 g/cm3  
34
20.00 g/cm3  
11
Tensile Strength
50.00 MPa  
38
1,000.00 MPa  
4
Viscosity
0.00  
25
0.00  
3
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
39
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
222.00 GPa  
1
Bulk Modulus
100.00 GPa  
16
462.00 GPa  
1
Young's Modulus
50.00 GPa  
39
528.00 GPa  
1
Poisson Ratio
0.38  
6
0.25  
24
Other Mechanical Properties
-  
Ductile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
11.50  
37
22.57  
11
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
17
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
200.00 nΩ·m  
18
81.20 nΩ·m  
35
Electrical Conductivity
0.07 106/cm Ω  
35
0.11 106/cm Ω  
21
Electron Affinity
53.00 kJ/mol  
23
106.10 kJ/mol  
10
Thermal
Specific Heat
0.21 J/(kg K)  
30
0.13 J/(kg K)  
40
Molar Heat Capacity
24.27 J/mol·K  
99+
24.70 J/mol·K  
99+
Thermal Conductivity
50.60 W/m·K  
30
87.60 W/m·K  
19
Critical Temperature
2,150.00 K  
16
3,300.00 K  
3
Thermal Expansion
7.10 µm/(m·K)  
99+
5.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol  
7
627.60 kJ/mol  
8
Enthalpy of Fusion
23.01 kJ/mol  
9
29.30 kJ/mol  
4
Enthalpy of Atomization
649.00 kJ/mol  
9
669.00 kJ/mol  
6
Standard Molar Entropy
181.10 J/mol.K  
2
32.60 J/mol.K  
99+
Summary >>
<< Thermal

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

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