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Lanthanum vs Tungsten

Lanthanum
Tungsten
Tungsten vs Lanthanum


Periodic Table
Symbol
La  
W  
Group Number
3  
15
6  
12
Period Number
6  
6  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7439910  
99+
7440337  
99+
Space Group Name
P63/mmc  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Lanthanum metal is highly malleable, ductile and sectile.
  • If exposed to air Lanthanum metal oxidizes rapidly.
  
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Carl Gustaf Mosander  
-  
Discovery
In 1838  
In 1781  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
28
Abundance In Sun
0.00 %  
25
0.00 %  
23
Abundance In Meteorites
0.00 %  
32
0.00 %  
39
Abundance In Earth's Crust
0.00 %  
19
0.00 %  
39
Abundance In Oceans
0.00 %  
29
0.00 %  
18
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • It has no commercial uses, but its alloys are in high demand. Lanthanum and Nickel alloy is used for the hydrogen gas storage.
  • The best-known use for mischmetal alloy of Lanthanum is; as a ‘flints’ for cigarette lighters.
  
  • 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.
  
Industrial Uses
Electrical Industry, Electronic Industry  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Mirror Manufacturing  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Non Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
32
0.00 Blood/mg dm-3  
31
In Bone
0.08 p.p.m.  
29
0.00 p.p.m.  
40
Physical
Melting Point
920.00 °C  
99+
3,410.00 °C  
1
Boiling Point
3,469.00 °C  
19
5,660.00 °C  
1
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Grayish White  
Luster
-  
Lustrous  
Hardness
  
  
Mohs Hardness
2.50  
15
7.50  
2
Brinell Hardness
350.00 MPa  
36
2,000.00 MPa  
4
Vickers Hardness
360.00 MPa  
99+
3,430.00 MPa  
3
Speed of Sound
2,475.00 m/s  
99+
4,620.00 m/s  
20
Optical Properties
  
  
Refractive Index
1.80  
22
2.10  
11
Reflectivity
70.00 %  
13
62.00 %  
21
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
La  
W  
Isotopes
  
  
Known Isotopes
31  
8
33  
6
Electronegativity
  
  
Pauling Electronegativity
1.10  
99+
2.36  
3
Sanderson Electronegativity
1.10  
38
0.98  
99+
Allred Rochow Electronegativity
1.08  
32
1.40  
20
Mulliken-Jaffe Electronegativity
1.10  
99+
2.36  
3
Allen Electronegativity
1.10  
99+
1.47  
33
Electropositivity
  
  
Pauling Electropositivity
2.90  
10
1.64  
99+
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol  
99+
770.00 kJ/mol  
16
2nd Energy Level
1,067.00 kJ/mol  
99+
1,700.00 kJ/mol  
30
3rd Energy Level
1,850.30 kJ/mol  
99+
2,045.40 kJ/mol  
99+
4th Energy Level
4,819.00 kJ/mol  
32
7,700.00 kJ/mol  
8
5th Energy Level
5,940.00 kJ/mol  
99+
7,700.00 kJ/mol  
17
6th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
35
7th Energy level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
29
8th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
29
9th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
25
10th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
29
11th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
28
12th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
99+
13th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
21
14th Energy Level
5,380.00 kJ/mol  
99+
770.00 kJ/mol  
99+
15th Energy Level
53,800.00 kJ/mol  
99+
77,000.00 kJ/mol  
18
16th Energy Level
53,800.00 kJ/mol  
99+
77,000.00 kJ/mol  
13
17th Energy Level
538.10 kJ/mol  
99+
770.00 kJ/mol  
34
18th Energy Level
5,380.00 kJ/mol  
99+
7,700.00 kJ/mol  
24
19th Energy Level
538.10 kJ/mol  
99+
770.00 kJ/mol  
31
20th Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
25
21st Energy Level
538.10 kJ/mol  
99+
770.00 kJ/mol  
99+
22nd Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
19
23rd Energy Level
5,380.00 kJ/mol  
25
770.00 kJ/mol  
99+
24th Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
15
25th Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
14
26th Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
14
27th Energy Level
538.10 kJ/mol  
99+
770.00 kJ/mol  
13
28th Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
19
29th Energy Level
538.10 kJ/mol  
99+
770.00 kJ/mol  
19
30th Energy Level
538.00 kJ/mol  
99+
770.00 kJ/mol  
14
Electrochemical Equivalent
1.73 g/amp-hr  
99+
1.14 g/amp-hr  
99+
Electron Work Function
3.50 eV  
99+
4.55 eV  
18
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
57  
99+
74  
99+
Electron Configuration
[Xe] 5d2 6s2  
[Xe] 4f14 5d4 6s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
57  
99+
74  
99+
Number of Neutrons
82  
99+
110  
28
Number of Electrons
57  
99+
74  
99+
Radius of an Atom
  
  
Atomic Radius
187.00 pm  
10
139.00 pm  
99+
Covalent Radius
207.00 pm  
6
162.00 pm  
31
Van der Waals Radius
240.00 pm  
17
200.00 pm  
35
Atomic Weight
138.91 amu  
99+
183.84 amu  
37
Atomic Volume
20.73 cm3/mol  
26
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Barium
  
Tantalum
  
Next Element
Cerium
  
Rhenium
  
Valence Electron Potential
40.71 (-eV)  
99+
140.00 (-eV)  
5
Lattice Constant
377.20 pm  
31
316.52 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.62  
16
1.29  
99+
Mechanical
Density
  
  
Density At Room Temperature
6.16 g/cm3  
99+
19.25 g/cm3  
16
Density When Liquid (at m.p.)
5.94 g/cm3  
99+
17.60 g/cm3  
15
Tensile Strength
45.00 MPa  
40
370.00 MPa  
11
Viscosity
0.00  
25
0.00  
1
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.98 (Pa)  
15
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
14.30 GPa  
99+
161.00 GPa  
5
Bulk Modulus
27.90 GPa  
99+
310.00 GPa  
4
Young's Modulus
36.60 GPa  
99+
411.00 GPa  
4
Poisson Ratio
0.28  
17
0.28  
17
Other Mechanical Properties
Ductile  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.17  
99+
19.22  
18
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
15
0.00 H/m  
17
Susceptibility
0.00  
25
0.00  
23
Electrical Properties
  
  
Electrical Property
Conductor  
Superconductor  
Resistivity
615.00 nΩ·m  
7
52.80 nΩ·m  
99+
Electrical Conductivity
0.01 106/cm Ω  
99+
0.19 106/cm Ω  
10
Electron Affinity
48.00 kJ/mol  
28
78.60 kJ/mol  
15
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.13 J/(kg K)  
40
Molar Heat Capacity
27.11 J/mol·K  
27
24.27 J/mol·K  
99+
Thermal Conductivity
13.40 W/m·K  
99+
173.00 W/m·K  
7
Critical Temperature
1,193.00 K  
99+
3,695.00 K  
1
Thermal Expansion
12.10 µm/(m·K)  
99+
4.50 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
399.60 kJ/mol  
24
799.10 kJ/mol  
1
Enthalpy of Fusion
6.20 kJ/mol  
99+
35.23 kJ/mol  
1
Enthalpy of Atomization
431.00 kJ/mol  
21
837.00 kJ/mol  
1
Standard Molar Entropy
56.90 J/mol.K  
31
32.60 J/mol.K  
99+
Periodic Table >>
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Lanthanide Series

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