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Lanthanum Uranium Comparison

Lanthanum
Uranium
Uranium Lanthanum comparison


Periodic Table
Symbol
La  
U  
Group Number
3  
15
0  
18
Period Number
6  
7  
Block
f block  
f block  
Element Family
Lanthanide  
Actinide  
CAS Number
7439910  
99+
7440611  
28
Space Group Name
P63/mmc  
Cmcm  
Space Group Number
194.00  
7
63.00  
13
Facts
Interesting Facts
  • Lanthanum metal is highly malleable, ductile and sectile.
  • If exposed to air Lanthanum metal oxidizes rapidly.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Mining, Ores of Minerals  
History
  
  
Who Discovered
Carl Gustaf Mosander  
-  
Discovery
In 1838  
In 1789  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
30
Abundance In Sun
0.00 %  
25
0.00 %  
26
Abundance In Meteorites
0.00 %  
32
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
19
0.00 %  
36
Abundance In Oceans
0.00 %  
29
0.00 %  
11
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.
  
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
Industrial Uses
Electrical Industry, Electronic Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Mirror Manufacturing  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Low Toxic  
Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
32
0.00 Blood/mg dm-3  
37
In Bone
0.08 p.p.m.  
29
1.20 p.p.m.  
19
Physical
Melting Point
920.00 °C  
99+
1,132.00 °C  
39
Boiling Point
3,469.00 °C  
19
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
6.00  
6
Brinell Hardness
350.00 MPa  
36
2,350.00 MPa  
2
Vickers Hardness
360.00 MPa  
99+
1,960.00 MPa  
6
Speed of Sound
2,475.00 m/s  
99+
3,155.00 m/s  
36
Optical Properties
  
  
Refractive Index
1.80  
22
1.38  
40
Reflectivity
70.00 %  
13
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
La  
U  
Isotopes
  
  
Known Isotopes
31  
8
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.10  
99+
1.38  
29
Sanderson Electronegativity
1.10  
38
1.38  
22
Allred Rochow Electronegativity
1.08  
32
1.22  
27
Mulliken-Jaffe Electronegativity
1.10  
99+
1.38  
29
Allen Electronegativity
1.10  
99+
1.38  
36
Electropositivity
  
  
Pauling Electropositivity
2.90  
10
2.62  
26
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol  
99+
597.60 kJ/mol  
99+
2nd Energy Level
1,067.00 kJ/mol  
99+
1,420.00 kJ/mol  
99+
3rd Energy Level
1,850.30 kJ/mol  
99+
1,900.00 kJ/mol  
99+
4th Energy Level
4,819.00 kJ/mol  
32
3,145.00 kJ/mol  
99+
5th Energy Level
5,940.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
6th Energy Level
5,380.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
7th Energy level
5,380.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
8th Energy Level
5,380.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
9th Energy Level
5,380.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
10th Energy Level
5,380.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
11th Energy Level
5,380.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
12th Energy Level
5,380.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
13th Energy Level
5,380.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
14th Energy Level
5,380.00 kJ/mol  
99+
5,970.00 kJ/mol  
34
15th Energy Level
53,800.00 kJ/mol  
99+
59,700.00 kJ/mol  
99+
16th Energy Level
53,800.00 kJ/mol  
99+
59,700.00 kJ/mol  
35
17th Energy Level
538.10 kJ/mol  
99+
597.60 kJ/mol  
99+
18th Energy Level
5,380.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
19th Energy Level
538.10 kJ/mol  
99+
597.60 kJ/mol  
99+
20th Energy Level
538.00 kJ/mol  
99+
597.00 kJ/mol  
99+
21st Energy Level
538.10 kJ/mol  
99+
597.60 kJ/mol  
99+
22nd Energy Level
538.00 kJ/mol  
99+
597.00 kJ/mol  
99+
23rd Energy Level
5,380.00 kJ/mol  
25
597.60 kJ/mol  
99+
24th Energy Level
538.00 kJ/mol  
99+
597.60 kJ/mol  
99+
25th Energy Level
538.00 kJ/mol  
99+
597.60 kJ/mol  
99+
26th Energy Level
538.00 kJ/mol  
99+
597.60 kJ/mol  
99+
27th Energy Level
538.10 kJ/mol  
99+
597.60 kJ/mol  
99+
28th Energy Level
538.00 kJ/mol  
99+
597.60 kJ/mol  
99+
29th Energy Level
538.10 kJ/mol  
99+
597.60 kJ/mol  
99+
30th Energy Level
538.00 kJ/mol  
99+
597.60 kJ/mol  
99+
Electrochemical Equivalent
1.73 g/amp-hr  
99+
1.48 g/amp-hr  
99+
Electron Work Function
3.50 eV  
99+
3.63 eV  
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
57  
99+
92  
26
Electron Configuration
[Xe] 5d2 6s2  
[Rn] 5f3 6d1 7s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Orthorhombic (ORTH)  
Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100  
ORTH-Crystal-Structure-of-Uranium.jpg#100  
Atom
  
  
Number of Protons
57  
99+
92  
26
Number of Neutrons
82  
99+
146  
14
Number of Electrons
57  
99+
92  
26
Radius of an Atom
  
  
Atomic Radius
187.00 pm  
10
156.00 pm  
31
Covalent Radius
207.00 pm  
6
196.00 pm  
14
Van der Waals Radius
240.00 pm  
17
186.00 pm  
40
Atomic Weight
138.91 amu  
99+
238.03 amu  
21
Atomic Volume
20.73 cm3/mol  
26
12.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Barium
  
Protactinium
  
Next Element
Cerium
  
Neptunium
  
Valence Electron Potential
40.71 (-eV)  
99+
170.00 (-eV)  
4
Lattice Constant
377.20 pm  
31
295.08 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.62  
16
1.02  
99+
Mechanical
Density
  
  
Density At Room Temperature
6.16 g/cm3  
99+
19.10 g/cm3  
17
Density When Liquid (at m.p.)
5.94 g/cm3  
99+
17.30 g/cm3  
17
Tensile Strength
45.00 MPa  
40
100.00 MPa  
28
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.98 (Pa)  
15
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
14.30 GPa  
99+
111.00 GPa  
10
Bulk Modulus
27.90 GPa  
99+
100.00 GPa  
16
Young's Modulus
36.60 GPa  
99+
208.00 GPa  
11
Poisson Ratio
0.28  
17
0.23  
30
Other Mechanical Properties
Ductile  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.17  
99+
18.80  
19
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
15
0.00 H/m  
16
Susceptibility
0.00  
25
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Poor Conductor  
Resistivity
615.00 nΩ·m  
7
0.28 nΩ·m  
99+
Electrical Conductivity
0.01 106/cm Ω  
99+
0.04 106/cm Ω  
99+
Electron Affinity
48.00 kJ/mol  
28
50.60 kJ/mol  
25
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.12 J/(kg K)  
99+
Molar Heat Capacity
27.11 J/mol·K  
27
27.67 J/mol·K  
18
Thermal Conductivity
13.40 W/m·K  
99+
27.50 W/m·K  
99+
Critical Temperature
1,193.00 K  
99+
1,405.00 K  
99+
Thermal Expansion
12.10 µm/(m·K)  
99+
13.90 µm/(m·K)  
30
Enthalpy
  
  
Enthalpy of Vaporization
399.60 kJ/mol  
24
477.00 kJ/mol  
18
Enthalpy of Fusion
6.20 kJ/mol  
99+
15.48 kJ/mol  
19
Enthalpy of Atomization
431.00 kJ/mol  
21
489.50 kJ/mol  
18
Standard Molar Entropy
56.90 J/mol.K  
31
50.20 J/mol.K  
99+
Summary >>
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