1 Periodic Table
1.1 Symbol
1.2 Group Number
1.5 Period Number
2.3 Block
2.4 Element Family
Lanthanide
Probably Transition
2.5 CAS Number
743991054038016
7429905
54386242
2.7 Space Group Name
2.8 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.
Not Available
3.2 Sources
Found in Minerals, Mining, Ores of Minerals
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced
3.3 History
3.3.1 Who Discovered
Carl Gustaf Mosander
Gesellschaft für Schwerionenforschung
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
3.6.2 Abundance In Sun
~0.0000002 %~-9999 %
1E-08
0.1
3.6.5 Abundance In Meteorites
3.6.7 Abundance In Earth's Crust
3.6.11 Abundance In Oceans
3.6.13 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.
- Currently known uses of Meitnerium metal are limited to research purpose only.
4.1.1 Industrial Uses
Electrical Industry, Electronic Industry
NA
4.1.3 Medical Uses
4.1.4 Other Uses
Alloys, Mirror Manufacturing
NA
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
4.2.5 In Bone
0.08 p.p.m.0.00 p.p.m.
0
170000
5 Physical
5.1 Melting Point
5.2 Boiling Point
5.3 Appearance
5.3.1 Physical State
5.3.2 Color
5.3.3 Luster
5.4 Hardness
5.4.1 Mohs Hardness
5.4.3 Brinell Hardness
5.4.5 Vickers Hardness
5.5 Speed of Sound
5.6 Optical Properties
5.6.1 Refractive Index
5.6.3 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
6.3.4 Sanderson Electronegativity
6.3.6 Allred Rochow Electronegativity
6.3.9 Mulliken-Jaffe Electronegativity
6.3.11 Allen Electronegativity
6.5 Electropositivity
6.5.1 Pauling Electropositivity
6.6 Ionization Energies
6.6.1 1st Energy Level
538.10 kJ/mol800.80 kJ/mol
375.7
26130
6.7.1 2nd Energy Level
1,067.00 kJ/mol1,823.60 kJ/mol
710.2162
28750
7.1.1 3rd Energy Level
1,850.30 kJ/mol2,904.20 kJ/mol
1600
34230
7.4.2 4th Energy Level
4,819.00 kJ/mol3,859.40 kJ/mol
2780
37066
7.4.3 5th Energy Level
5,940.00 kJ/mol4,920.80 kJ/mol
4305.2
97510
7.4.5 6th Energy Level
7.4.7 7th Energy level
7.4.8 8th Energy Level
7.5.2 9th Energy Level
7.5.4 10th Energy Level
7.5.6 11th Energy Level
7.6.1 12th Energy Level
7.7.1 13th Energy Level
7.9.1 14th Energy Level
7.10.1 15th Energy Level
7.10.2 16th Energy Level
7.12.1 17th Energy Level
8.1.2 18th Energy Level
8.1.4 19th Energy Level
8.1.5 20th Energy Level
8.2.1 21st Energy Level
8.4.2 22nd Energy Level
8.4.4 23rd Energy Level
8.5.2 24th Energy Level
8.5.4 25th Energy Level
8.5.6 26th Energy Level
8.5.7 27th Energy Level
8.6.1 28th Energy Level
8.6.2 29th Energy Level
9.1.2 30th Energy Level
9.2 Electrochemical Equivalent
1.73 g/amp-hrNA
0.16812
8.3209
9.4 Electron Work Function
9.5 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
[Xe] 5d2 6s2
[Rn] 5f14 6d7 7s2
10.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Face Centered Cubic (FCC)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.3 Number of Neutrons
11.1.1 Number of Electrons
11.4 Radius of an Atom
11.4.1 Atomic Radius
187.00 pm122.00 pm
112
265
11.4.2 Covalent Radius
207.00 pm129.00 pm
96
260
11.5.1 Van der Waals Radius
11.7 Atomic Weight
138.91 amu278.00 amu
6.94
294
11.9 Atomic Volume
20.73 cm3/molNA
1.39
71.07
11.10 Adjacent Atomic Numbers
11.10.1 Previous Element
11.10.2 Next Element
11.11 Valence Electron Potential
11.12 Lattice Constant
377.20 pmNA
228.58
891.25
11.13 Lattice Angles
11.14 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
6.16 g/cm337.40 g/cm3
0.534
40.7
12.1.2 Density When Liquid (at m.p.)
12.2 Tensile Strength
12.3 Viscosity
12.4 Vapor Pressure
12.4.1 Vapor Pressure at 1000 K
12.4.2 Vapor Pressure at 2000 K
12.5 Elasticity properties
12.5.1 Shear Modulus
12.5.2 Bulk Modulus
12.5.3 Young's Modulus
12.6 Poisson Ratio
12.7 Other Mechanical Properties
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
13.1.3 Permeability
13.1.4 Susceptibility
13.2 Electrical Properties
13.2.1 Electrical Property
13.2.2 Resistivity
13.2.3 Electrical Conductivity
0.01 106/cm ΩNA
0.00666
0.63
13.2.4 Electron Affinity
14 Thermal
14.1 Specific Heat
14.2 Molar Heat Capacity
27.11 J/mol·KNA
16.443
62.7
14.3 Thermal Conductivity
14.4 Critical Temperature
14.5 Thermal Expansion
14.6 Enthalpy
14.6.1 Enthalpy of Vaporization
399.60 kJ/molNA
7.32
799.1
14.6.2 Enthalpy of Fusion
14.6.3 Enthalpy of Atomization
14.7 Standard Molar Entropy
56.90 J/mol.KNA
9.5
198.1