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Tungsten Tantalum Comparison


Tantalum Tungsten comparison


Periodic Table

Symbol
W   
Ta   

Group Number
6   
12
5   
13

Period Number
6   
6   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
7440337   
99+
7440257   
99+

Space Group Name
Im_ 3m   
Im_ 3m   

Space Group Number
229.00   
1
229.00   
1

Facts

Interesting Facts
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
  • Tantalum metal is known as corrosion resistance.
  • Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
  

Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Not Available   
Anders Gustaf Ekeberg   

Discovery
In 1781   
In 1802   

Abundance
  
  

Abundance In Universe
5 * 10-8 %   
27
8 * 10-9 %   
31

Abundance In Sun
~0.0000004 %   
23
~-9999 %   

Abundance In Meteorites
0.00 %   
39
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
39
0.00 %   
37

Abundance In Oceans
0.00 %   
18
0.00 %   
31

Uses

Uses & Benefits
  • Tungsten and its alloys are used in high-temperature applications like welding electrodes, high-temperature furnace, etc.
  • Tungsten carbide is very hard and used in metal working, mining and petroleum industry.
  
  • 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.
  

Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   
Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Low Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.00 Blood/mg dm-3   
31
Not Available   

In Bone
0.00 p.p.m.   
35
0.03 p.p.m.   
28

Physical Properties

Melting Point
3,410.00 °C   
1
2,996.00 °C   
4

Boiling Point
5,660.00 °C   
1
5,425.00 °C   
4

Appearance
  
  

Physical State
Solid   
Solid   

Color
Grayish White   
Gray Blue   

Luster
Lustrous   
Metallic   

Hardness
  
  

Mohs Hardness
7.50   
2
6.50   
5

Brinell Hardness
2,000.00 MPa   
4
440.00 MPa   
28

Vickers Hardness
3,430.00 MPa   
1
870.00 MPa   
12

Speed of Sound
4,620.00 m/s   
16
3,400.00 m/s   
22

Optical Properties
  
  

Reflectivity
62.00 %   
13
78.00 %   
6

Allotropes
No   
No   

α Allotropes
Not Available   
Not Available   

β Allotropes
Not Available   
Not Available   

γ Allotropes
Not Available   
Not Available   

Chemical Properties

Chemical Formula
W   
Ta   

Isotopes
  
  

Known Isotopes
33   
6
31   
8

Electronegativity
  
  

Pauling Electronegativity
2.36   
2
1.50   
27

Sanderson Electronegativity
0.98   
23
Not Available   

Allred Rochow Electronegativity
1.40   
19
1.33   
22

Allen Electronegativity
1.47   
29
1.34   
33

Electropositivity
  
  

Pauling Electropositivity
1.64   
99+
2.50   
27

Ionization Energies
  
  

1st Energy Level
770.00 kJ/mol   
16
761.00 kJ/mol   
18

2nd Energy Level
1,700.00 kJ/mol   
29
1,500.00 kJ/mol   
40

Electrochemical Equivalent
1.14 g/amp-hr   
99+
1.35 g/amp-hr   
99+

Electron Work Function
4.55 eV   
13
4.25 eV   
21

Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   

Atomic Properties

Atomic Number
74   
99+
73   
99+

Electron Configuration
[Xe] 4f14 5d4 6s2   
[Xe] 4f14 5d3 6s2   

Crystal Structure
Body Centered Cubic (BCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
74   
99+
73   
99+

Number of Neutrons
110   
27
108   
28

Number of Electrons
74   
99+
73   
99+

Radius of an Atom
  
  

Atomic Radius
139.00 pm   
39
146.00 pm   
35

Covalent Radius
162.00 pm   
29
170.00 pm   
25

Van der Waals Radius
200.00 pm   
28
200.00 pm   
28

Atomic Weight
183.84 amu   
37
180.95 amu   
38

Atomic Volume
9.53 cm3/mol   
99+
10.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Tantalum
  
Hafnium
  

Next Element
Rhenium
  
Tungsten
  

Valence Electron Potential
140.00 (-eV)   
5
110.00 (-eV)   
7

Lattice Constant
316.52 pm   
99+
330.13 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
19.25 g/cm3   
16
16.69 g/cm3   
18

Density When Liquid (at m.p.)
17.60 g/cm3   
5
15.00 g/cm3   
9

Tensile Strength
370.00 MPa   
10
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
0.00 (Pa)   
32
0.00 (Pa)   
31

Elasticity properties
  
  

Shear Modulus
161.00 GPa   
5
69.00 GPa   
13

Bulk Modulus
310.00 GPa   
4
200.00 GPa   
8

Young's Modulus
411.00 GPa   
4
186.00 GPa   
13

Poisson Ratio
0.28   
17
0.34   
10

Other Mechanical Properties
Ductile, Malleable   
Ductile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
19.22   
9
16.65   
11

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Superconductor   
Conductor   

Resistivity
52.80 nΩ·m   
99+
131.00 nΩ·m   
25

Electrical Conductivity
0.19 106/cm Ω   
10
0.08 106/cm Ω   
27

Electron Affinity
78.60 kJ/mol   
13
31.00 kJ/mol   
29

Thermal Properties

Specific Heat
0.13 J/(kg K)   
39
0.14 J/(kg K)   
37

Molar Heat Capacity
24.27 J/mol·K   
99+
25.36 J/mol·K   
99+

Thermal Conductivity
173.00 W/m·K   
7
57.50 W/m·K   
27

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
4.50 µm/(m·K)   
99+
6.30 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
799.10 kJ/mol   
1
753.10 kJ/mol   
2

Enthalpy of Fusion
35.23 kJ/mol   
1
31.40 kJ/mol   
3

Enthalpy of Atomization
837.00 kJ/mol   
1
782.00 kJ/mol   
3

Standard Molar Entropy
32.60 J/mol.K   
99+
41.50 J/mol.K   
37

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