1 Periodic Table
1.1 Symbol
1.2 Group Number
2.2 Period Number
2.4 Block
2.5 Element Family
Lanthanide
Transition Metal
2.6 CAS Number
74399107440575
7429905
54386242
2.8 Space Group Name
2.9 Space Group Number
3 Facts
3.1 Interesting Facts
- Lanthanum metal is highly malleable, ductile and sectile.
- If exposed to air Lanthanum metal oxidizes rapidly.
- It is found in copper ores and from the crust of the earth.
- It is the most malleable and ductile metal.
- Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
3.2 Sources
Found in Minerals, Mining, Ores of Minerals
Earth's crust, Mining, Ores of metals
3.3 History
3.3.1 Who Discovered
Carl Gustaf Mosander
Unknown
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
2 * 10-7 %6 * 10-8 %
5E-09
0.11
3.5.1 Abundance In Sun
~0.0000002 %~0.0000001 %
1E-08
0.1
3.5.2 Abundance In Meteorites
3.6.2 Abundance In Earth's Crust
3.6.4 Abundance In Oceans
3.6.5 Abundance In Humans
4 Uses
4.1 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.
- Gold metal is mainly used for Jewelry, bullion, coinage, etc.
- It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
4.1.1 Industrial Uses
Electrical Industry, Electronic Industry
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry
4.1.2 Medical Uses
NA
Dentistry, Pharmaceutical Industry
4.1.3 Other Uses
Alloys, Mirror Manufacturing
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
4.2 Biological Properties
4.2.1 Toxicity
4.2.2 Present in Human Body
4.2.3 In Blood
NA0.00 Blood/mg dm-3
0
1970
4.3.1 In Bone
0.08 p.p.m.0.02 p.p.m.
0
170000
5 Physical
5.1 Melting Point
920.00 °C1,064.43 °C
27
3410
5.2 Boiling Point
3,469.00 °C2,807.00 °C
147
5660
5.3 Appearance
5.3.1 Physical State
5.3.2 Color
5.3.3 Luster
5.4 Hardness
5.4.1 Mohs Hardness
5.4.2 Brinell Hardness
350.00 MPa194.00 MPa
0.14
3490
5.4.3 Vickers Hardness
360.00 MPa216.00 MPa
121
3430
5.5 Speed of Sound
2,475.00 m/s2,030.00 m/s
818
16200
5.6 Optical Properties
5.6.1 Refractive Index
5.6.2 Reflectivity
5.7 Allotropes
5.7.1 α Allotropes
Not Available
Not Available
5.7.2 β Allotropes
Not Available
Not Available
5.7.3 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
6.2 Isotopes
6.2.1 Known Isotopes
6.3 Electronegativity
6.3.1 Pauling Electronegativity
6.3.2 Sanderson Electronegativity
6.3.3 Allred Rochow Electronegativity
6.3.4 Mulliken-Jaffe Electronegativity
6.3.5 Allen Electronegativity
6.4 Electropositivity
6.4.1 Pauling Electropositivity
6.5 Ionization Energies
6.5.1 1st Energy Level
538.10 kJ/mol890.10 kJ/mol
375.7
26130
6.5.2 2nd Energy Level
1,067.00 kJ/mol1,980.00 kJ/mol
710.2162
28750
6.5.3 3rd Energy Level
1,850.30 kJ/molNA
1600
34230
6.5.4 4th Energy Level
4,819.00 kJ/molNA
2780
37066
6.5.5 5th Energy Level
5,940.00 kJ/molNA
4305.2
97510
6.5.6 6th Energy Level
6.5.7 7th Energy level
6.5.8 8th Energy Level
6.5.9 9th Energy Level
6.5.10 10th Energy Level
6.5.11 11th Energy Level
6.5.12 12th Energy Level
6.5.13 13th Energy Level
6.5.14 14th Energy Level
6.5.15 15th Energy Level
6.5.16 16th Energy Level
6.5.17 17th Energy Level
6.5.18 18th Energy Level
6.5.19 19th Energy Level
6.5.20 20th Energy Level
6.5.21 21st Energy Level
6.5.22 22nd Energy Level
6.5.23 23rd Energy Level
6.5.24 24th Energy Level
6.5.25 25th Energy Level
6.5.26 26th Energy Level
6.5.27 27th Energy Level
6.5.28 28th Energy Level
6.5.29 29th Energy Level
6.5.30 30th Energy Level
6.6 Electrochemical Equivalent
1.73 g/amp-hr2.45 g/amp-hr
0.16812
8.3209
6.7 Electron Work Function
6.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Ionization, Solubility
7 Atomic
7.1 Atomic Number
7.2 Electron Configuration
[Xe] 5d2 6s2
[Xe] 4f14 5d10 6s1
7.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Face Centered Cubic (FCC)
7.3.1 Crystal Lattice
7.4 Atom
7.4.1 Number of Protons
7.4.2 Number of Neutrons
7.4.3 Number of Electrons
7.5 Radius of an Atom
7.5.1 Atomic Radius
187.00 pm151.00 pm
112
265
7.5.2 Covalent Radius
207.00 pm144.00 pm
96
260
7.5.3 Van der Waals Radius
240.00 pm166.00 pm
139
348
7.6 Atomic Weight
138.91 amu196.97 amu
6.94
294
7.7 Atomic Volume
20.73 cm3/mol10.20 cm3/mol
1.39
71.07
7.8 Adjacent Atomic Numbers
7.8.1 Previous Element
7.8.2 Next Element
7.9 Valence Electron Potential
40.71 (-eV)43.40 (-eV)
8
392.42
7.10 Lattice Constant
377.20 pm407.82 pm
228.58
891.25
7.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
7.12 Lattice C/A Ratio
8 Mechanical
8.1 Density
8.1.1 Density At Room Temperature
6.16 g/cm319.30 g/cm3
0.534
40.7
8.1.2 Density When Liquid (at m.p.)
5.94 g/cm317.31 g/cm3
0.512
20
8.2 Tensile Strength
8.3 Viscosity
8.4 Vapor Pressure
8.4.1 Vapor Pressure at 1000 K
8.4.2 Vapor Pressure at 2000 K
0.98 (Pa)67.00 (Pa)
2.62E-10
774
8.5 Elasticity properties
8.5.1 Shear Modulus
14.30 GPa27.00 GPa
1.3
222
8.5.2 Bulk Modulus
27.90 GPa180.00 GPa
1.6
462
8.5.3 Young's Modulus
36.60 GPa79.00 GPa
1.7
528
8.6 Poisson Ratio
8.7 Other Mechanical Properties
Ductile
Ductile, Malleable
9 Magnetic
9.1 Magnetic Characteristics
9.1.1 Specific Gravity
9.1.2 Magnetic Ordering
9.1.3 Permeability
9.1.4 Susceptibility
9.2 Electrical Properties
9.2.1 Electrical Property
9.2.2 Resistivity
615.00 nΩ·m2.20 nΩ·m
0.18
961
9.2.3 Electrical Conductivity
0.01 106/cm Ω0.45 106/cm Ω
0.00666
0.63
9.2.4 Electron Affinity
48.00 kJ/mol222.80 kJ/mol
0
222.8
10 Thermal
10.1 Specific Heat
0.19 J/(kg K)0.13 J/(kg K)
0.11
3.6
10.2 Molar Heat Capacity
27.11 J/mol·K25.42 J/mol·K
16.443
62.7
10.3 Thermal Conductivity
13.40 W/m·K318.00 W/m·K
6.3
429
10.4 Critical Temperature
10.5 Thermal Expansion
12.10 µm/(m·K)14.20 µm/(m·K)
4.5
97
10.6 Enthalpy
10.6.1 Enthalpy of Vaporization
399.60 kJ/mol324.40 kJ/mol
7.32
799.1
10.6.2 Enthalpy of Fusion
6.20 kJ/mol12.55 kJ/mol
2.1
35.23
10.6.3 Enthalpy of Atomization
431.00 kJ/mol364.00 kJ/mol
61.5
837
10.7 Standard Molar Entropy
56.90 J/mol.K47.40 J/mol.K
9.5
198.1