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Tantalum vs Mercury

Tantalum
Mercury
Mercury vs Tantalum


Periodic Table
Symbol
Ta   
Hg   
Group Number
5   
13
12   
6
Period Number
6   
6   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7440257   
99+
7439976   
99+
Space Group Name
Im_ 3m   
R_ 3m   
Space Group Number
229.00   
1
166.00   
6
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.
  
  • At room temperature mercury is found in a liquid state.
  • A coin of pound or rupees floats in mercury.
  • Because of its low melting point and boiling point it is used in thermometers.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of Minerals   
History
  
  
Who Discovered
Anders Gustaf Ekeberg   
Ancient Chinese and Indians   
Discovery
In 1802   
Before 2000 BCE   
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
0.05 %   
9
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.
  
  • It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
  • It is manly used as a catalysts in chemical industry.
  
Industrial Uses
Electrical Industry, Electronic Industry   
Electrical Industry, Electronic Industry   
Medical Uses
NA   
Dentistry   
Other Uses
Alloys   
Alloys, Mirror Manufacturing, Pharmaceutical Industry   
Biological Properties
  
  
Toxicity
Low Toxic   
Highly Toxic   
Present in Human Body
Yes   
Yes   
In Blood
Not Available   
0.01 Blood/mg dm-3   
23
In Bone
0.03 p.p.m.   
28
0.45 p.p.m.   
19
Physical Properties
Melting Point
2,996.00 °C   
4
Not Available   
Boiling Point
5,425.00 °C   
4
356.58 °C   
99+
Appearance
  
  
Physical State
Solid   
Liquid   
Color
Gray Blue   
Silver   
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
1,451.40 m/s   
99+
Optical Properties
  
  
Refractive Index
Not Available   
1.00   
3
Reflectivity
78.00 %   
6
73.00 %   
8
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   
Hg   
Isotopes
  
  
Known Isotopes
31   
8
34   
5
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
2.00   
7
Sanderson Electronegativity
Not Available   
2.20   
7
Allred Rochow Electronegativity
1.33   
22
1.44   
17
Mulliken-Jaffe Electronegativity
Not Available   
1.81   
9
Allen Electronegativity
1.34   
33
1.44   
30
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
2.00   
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol   
18
1,007.10 kJ/mol   
4
2nd Energy Level
1,500.00 kJ/mol   
40
1,810.00 kJ/mol   
20
3rd Energy Level
Not Available   
3,300.00 kJ/mol   
20
Electrochemical Equivalent
1.35 g/amp-hr   
99+
3.74 g/amp-hr   
10
Electron Work Function
4.25 eV   
21
4.49 eV   
15
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Flammability, Ionization, Solubility   
Atomic Properties
Atomic Number
73   
99+
80   
36
Electron Configuration
[Xe] 4f14 5d3 6s2   
[Xe] 4f14 5d10 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Rhombohedral (RHO)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
RHO-Crystal-Structure-of-Mercury.jpg#100   
Atom
  
  
Number of Protons
73   
99+
80   
36
Number of Neutrons
108   
28
121   
22
Number of Electrons
73   
99+
80   
36
Radius of an Atom
  
  
Atomic Radius
146.00 pm   
35
151.00 pm   
32
Covalent Radius
170.00 pm   
25
132.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
155.00 pm   
99+
Atomic Weight
180.95 amu   
38
200.59 amu   
32
Atomic Volume
10.90 cm3/mol   
99+
14.82 cm3/mol   
35
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Gold
  
Next Element
Tungsten
  
Thallium
  
Valence Electron Potential
110.00 (-eV)   
7
28.20 (-eV)   
99+
Lattice Constant
330.13 pm   
99+
300.50 pm   
99+
Lattice Angles
π/2, π/2, π/2   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
16.69 g/cm3   
18
13.53 g/cm3   
24
Density When Liquid (at m.p.)
15.00 g/cm3   
9
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
0.00   
1
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
13.53   
16
Magnetic Ordering
Paramagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
131.00 nΩ·m   
25
961.00 nΩ·m   
1
Electrical Conductivity
0.08 106/cm Ω   
27
0.01 106/cm Ω   
99+
Electron Affinity
31.00 kJ/mol   
29
0.00 kJ/mol   
40
Thermal Properties
Specific Heat
0.14 J/(kg K)   
37
0.14 J/(kg K)   
38
Molar Heat Capacity
25.36 J/mol·K   
99+
27.98 J/mol·K   
13
Thermal Conductivity
57.50 W/m·K   
27
8.30 W/m·K   
99+
Critical Temperature
Not Available   
1,750.00 K   
6
Thermal Expansion
6.30 µm/(m·K)   
99+
60.40 µm/(m·K)   
5
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol   
2
56.90 kJ/mol   
99+
Enthalpy of Fusion
31.40 kJ/mol   
3
2.29 kJ/mol   
99+
Enthalpy of Atomization
782.00 kJ/mol   
3
61.50 kJ/mol   
99+
Standard Molar Entropy
41.50 J/mol.K   
37
75.80 J/mol.K   
6
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