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Tantalum vs Osmium

Tantalum
Osmium
Osmium vs Tantalum


Periodic Table
Symbol
Ta  
Os  
Group Number
5  
13
8  
10
Period Number
6  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440257  
99+
7440042  
99+
Space Group Name
Im_ 3m  
P63/mmc  
Space Group Number
229.00  
2
194.00  
7
Facts
Interesting Facts
  • Tantalum metal is known as corrosion resistance.
  • Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
  
  • 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
Found in Minerals, Mining, Ores of Minerals  
Found As a By-product, Found in Minerals, Mining  
History
  
  
Who Discovered
Anders Gustaf Ekeberg  
Smithson Tennant  
Discovery
In 1802  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
32
0.00 %  
22
Abundance In Sun
0.00 %  
18
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
28
Abundance In Earth's Crust
0.00 %  
37
0.00 %  
99+
Abundance In Oceans
0.00 %  
31
0.00 %  
99+
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Tantalum metal is mainly used in the manufacturing of electron components. Its Oxide layer acts as an insulator.
  • Tantalum metal is also used in surgical transplant like replacement of bone, skull plates and as a woven gauze.
  
  • 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
Electrical Industry, Electronic Industry  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Highly Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
37
In Bone
0.03 p.p.m.  
33
0.00 p.p.m.  
99+
Physical
Melting Point
2,996.00 °C  
4
3,045.00 °C  
3
Boiling Point
5,425.00 °C  
4
5,027.00 °C  
6
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray Blue  
Silvery Bluish-Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
7.00  
3
Brinell Hardness
440.00 MPa  
33
3,490.00 MPa  
1
Vickers Hardness
870.00 MPa  
19
3,920.00 MPa  
1
Speed of Sound
3,400.00 m/s  
33
4,940.00 m/s  
15
Optical Properties
  
  
Refractive Index
2.15  
10
2.07  
12
Reflectivity
78.00 %  
8
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ta  
Os  
Isotopes
  
  
Known Isotopes
31  
8
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.50  
28
2.20  
5
Sanderson Electronegativity
1.50  
18
2.20  
8
Allred Rochow Electronegativity
1.33  
23
1.52  
13
Mulliken-Jaffe Electronegativity
1.50  
26
2.20  
6
Allen Electronegativity
1.34  
38
1.65  
22
Electropositivity
  
  
Pauling Electropositivity
2.50  
27
1.80  
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol  
18
840.00 kJ/mol  
12
2nd Energy Level
1,500.00 kJ/mol  
99+
1,309.80 kJ/mol  
99+
3rd Energy Level
761.00 kJ/mol  
99+
1,600.00 kJ/mol  
99+
4th Energy Level
7,610.00 kJ/mol  
9
840.00 kJ/mol  
99+
5th Energy Level
7,610.00 kJ/mol  
19
8,400.00 kJ/mol  
10
6th Energy Level
7,610.00 kJ/mol  
36
8,400.00 kJ/mol  
30
7th Energy level
7,610.00 kJ/mol  
30
8,400.00 kJ/mol  
25
8th Energy Level
7,610.00 kJ/mol  
30
8,400.00 kJ/mol  
25
9th Energy Level
7,610.00 kJ/mol  
26
5,280.00 kJ/mol  
99+
10th Energy Level
7,610.00 kJ/mol  
30
8,400.00 kJ/mol  
26
11th Energy Level
7,610.00 kJ/mol  
29
8,400.00 kJ/mol  
23
12th Energy Level
7,610.00 kJ/mol  
99+
8,400.00 kJ/mol  
99+
13th Energy Level
7,610.00 kJ/mol  
22
8,400.00 kJ/mol  
18
14th Energy Level
7,610.00 kJ/mol  
19
840.00 kJ/mol  
99+
15th Energy Level
76,100.00 kJ/mol  
19
84,000.00 kJ/mol  
12
16th Energy Level
76,100.00 kJ/mol  
14
840.00 kJ/mol  
99+
17th Energy Level
761.00 kJ/mol  
35
840.00 kJ/mol  
29
18th Energy Level
7,610.00 kJ/mol  
25
8,400.00 kJ/mol  
18
19th Energy Level
761.00 kJ/mol  
32
840.00 kJ/mol  
27
20th Energy Level
761.00 kJ/mol  
26
840.00 kJ/mol  
19
21st Energy Level
761.00 kJ/mol  
99+
840.00 kJ/mol  
39
22nd Energy Level
761.00 kJ/mol  
20
840.00 kJ/mol  
15
23rd Energy Level
761.00 kJ/mol  
99+
840.00 kJ/mol  
99+
24th Energy Level
761.00 kJ/mol  
16
840.00 kJ/mol  
11
25th Energy Level
761.00 kJ/mol  
16
840.00 kJ/mol  
9
26th Energy Level
761.00 kJ/mol  
16
840.00 kJ/mol  
9
27th Energy Level
761.00 kJ/mol  
15
713.30 kJ/mol  
24
28th Energy Level
761.00 kJ/mol  
21
840.10 kJ/mol  
13
29th Energy Level
761.00 kJ/mol  
22
840.00 kJ/mol  
13
30th Energy Level
761.00 kJ/mol  
16
840.00 kJ/mol  
9
Electrochemical Equivalent
1.35 g/amp-hr  
99+
1.77 g/amp-hr  
99+
Electron Work Function
4.25 eV  
28
4.83 eV  
13
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
73  
99+
76  
40
Electron Configuration
[Xe] 4f14 5d3 6s2  
[Xe] 4f14 5d6 6s2  
Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
73  
99+
76  
39
Number of Neutrons
108  
29
114  
26
Number of Electrons
73  
99+
76  
39
Radius of an Atom
  
  
Atomic Radius
146.00 pm  
37
133.80 pm  
99+
Covalent Radius
170.00 pm  
27
128.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
216.00 pm  
30
Atomic Weight
180.95 amu  
38
190.23 amu  
35
Atomic Volume
10.90 cm3/mol  
99+
8.49 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Rhenium
  
Next Element
Tungsten
  
Iridium
  
Valence Electron Potential
110.00 (-eV)  
7
91.40 (-eV)  
12
Lattice Constant
330.13 pm  
99+
273.44 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.41  
99+
1.58  
37
Mechanical
Density
  
  
Density At Room Temperature
16.69 g/cm3  
18
22.59 g/cm3  
9
Density When Liquid (at m.p.)
15.00 g/cm3  
23
20.00 g/cm3  
11
Tensile Strength
180.00 MPa  
20
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
69.00 GPa  
13
222.00 GPa  
1
Bulk Modulus
200.00 GPa  
8
462.00 GPa  
1
Young's Modulus
186.00 GPa  
14
528.00 GPa  
1
Poisson Ratio
0.34  
10
0.25  
24
Other Mechanical Properties
Ductile  
Ductile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
16.65  
20
22.57  
11
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
27
0.00  
17
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
131.00 nΩ·m  
25
81.20 nΩ·m  
35
Electrical Conductivity
0.08 106/cm Ω  
32
0.11 106/cm Ω  
21
Electron Affinity
31.00 kJ/mol  
35
106.10 kJ/mol  
10
Thermal
Specific Heat
0.14 J/(kg K)  
38
0.13 J/(kg K)  
40
Molar Heat Capacity
25.36 J/mol·K  
99+
24.70 J/mol·K  
99+
Thermal Conductivity
57.50 W/m·K  
27
87.60 W/m·K  
19
Critical Temperature
3,290.00 K  
4
3,300.00 K  
3
Thermal Expansion
6.30 µm/(m·K)  
99+
5.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol  
2
627.60 kJ/mol  
8
Enthalpy of Fusion
31.40 kJ/mol  
3
29.30 kJ/mol  
4
Enthalpy of Atomization
782.00 kJ/mol  
3
669.00 kJ/mol  
6
Standard Molar Entropy
41.50 J/mol.K  
99+
32.60 J/mol.K  
99+
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