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Tantalum Technetium Comparison


Technetium Tantalum comparison


Periodic Table

Symbol
Ta   
Tc   

Group Number
5   
13
7   
11

Period Number
6   
5   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
7440257   
99+
7440268   
99+

Space Group Name
Im_ 3m   
P63/mmc   

Space Group Number
229.00   
1
194.00   
5

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.
  
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Made by Bombarding Molybdenum with Deuterons   

History
  
  

Who Discovered
Anders Gustaf Ekeberg   
Emilio Segrè and Carlo Perriero   

Discovery
In 1802   
In 1937   

Abundance
  
  

Abundance In Universe
8 * 10-9 %   
31
Not Available   

Abundance In Meteorites
0.00 %   
99+
Not Available   

Abundance In Earth's Crust
0.00 %   
37
Not Available   

Abundance In Oceans
0.00 %   
31
Not Available   

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.
  
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  

Industrial Uses
Electrical Industry, Electronic Industry   
NA   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys, Nuclear Research, Research Purposes   

Biological Properties
  
  

Toxicity
Low Toxic   
Low Toxic   

Present in Human Body
Yes   
No   

In Blood
Not Available   
0.00 Blood/mg dm-3   
37

In Bone
0.03 p.p.m.   
28
0.00 p.p.m.   
36

Physical Properties

Melting Point
2,996.00 °C   
4
2,200.00 °C   
9

Boiling Point
5,425.00 °C   
4
4,877.00 °C   
7

Appearance
  
  

Physical State
Solid   
Solid   

Color
Gray Blue   
Shiny Gray   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
6.50   
5
Not Available   

Brinell Hardness
440.00 MPa   
28
Not Available   

Vickers Hardness
870.00 MPa   
12
Not Available   

Speed of Sound
3,400.00 m/s   
22
16,200.00 m/s   
1

Optical Properties
  
  

Reflectivity
78.00 %   
6
Not Available   

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
Ta   
Tc   

Isotopes
  
  

Known Isotopes
31   
8
18   
21

Electronegativity
  
  

Pauling Electronegativity
1.50   
27
1.90   
11

Allred Rochow Electronegativity
1.33   
22
1.36   
20

Allen Electronegativity
1.34   
33
1.51   
28

Electropositivity
  
  

Pauling Electropositivity
2.50   
27
2.10   
99+

Ionization Energies
  
  

1st Energy Level
761.00 kJ/mol   
18
702.00 kJ/mol   
36

2nd Energy Level
1,500.00 kJ/mol   
40
1,470.00 kJ/mol   
99+

3rd Energy Level
Not Available   
2,850.00 kJ/mol   
33

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

Electron Work Function
4.25 eV   
21
Not Available   

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

Atomic Properties

Atomic Number
73   
99+
43   
99+

Electron Configuration
[Xe] 4f14 5d3 6s2   
[Kr] 4d5 5s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   

Atom
  
  

Number of Protons
73   
99+
43   
99+

Number of Neutrons
108   
28
55   
99+

Number of Electrons
73   
99+
43   
99+

Radius of an Atom
  
  

Atomic Radius
146.00 pm   
35
136.00 pm   
99+

Covalent Radius
170.00 pm   
25
147.00 pm   
37

Van der Waals Radius
200.00 pm   
28
200.00 pm   
28

Atomic Weight
180.95 amu   
38
98.00 amu   
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Hafnium
  
Molybdenum
  

Next Element
Tungsten
  
Ruthenium
  

Valence Electron Potential
110.00 (-eV)   
7
180.00 (-eV)   
3

Lattice Constant
330.13 pm   
99+
273.50 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.60   
5

Mechanical Properties

Density
  
  

Density At Room Temperature
16.69 g/cm3   
18
11.00 g/cm3   
34

Density When Liquid (at m.p.)
15.00 g/cm3   
9
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
0.00 (Pa)   
31
Not Available   

Elasticity properties
  
  

Shear Modulus
69.00 GPa   
13
Not Available   

Bulk Modulus
200.00 GPa   
8
Not Available   

Young's Modulus
186.00 GPa   
13
Not Available   

Poisson Ratio
0.34   
10
Not Available   

Other Mechanical Properties
Ductile   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
16.65   
11
11.50   
24

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
131.00 nΩ·m   
25
200.00 nΩ·m   
18

Electrical Conductivity
0.08 106/cm Ω   
27
0.07 106/cm Ω   
30

Electron Affinity
31.00 kJ/mol   
29
53.00 kJ/mol   
18

Thermal Properties

Specific Heat
0.14 J/(kg K)   
37
0.21 J/(kg K)   
29

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

Thermal Conductivity
57.50 W/m·K   
27
50.60 W/m·K   
30

Critical Temperature
Not Available   
Not Available   

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

Enthalpy
  
  

Enthalpy of Vaporization
753.10 kJ/mol   
2
660.00 kJ/mol   
6

Enthalpy of Fusion
31.40 kJ/mol   
3
23.01 kJ/mol   
9

Enthalpy of Atomization
782.00 kJ/mol   
3
649.00 kJ/mol   
8

Standard Molar Entropy
41.50 J/mol.K   
37
181.10 J/mol.K   
2

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