1 Periodic Table
1.1 Symbol
1.2 Group Number
2.4 Period Number
3.6 Block
3.7 Element Family
3.8 CAS Number
74399107440724
7429905
54386242
3.10 Space Group Name
3.11 Space Group Number
4 Facts
4.1 Interesting Facts
- Lanthanum metal is highly malleable, ductile and sectile.
- If exposed to air Lanthanum metal oxidizes rapidly.
- Fermium metal is highly radioactive in nature.
- Fermium is synthetically produced metal.
4.2 Sources
Found in Minerals, Mining, Ores of Minerals
Bombarding Pu-239 with Neutrons
4.3 History
4.3.1 Who Discovered
Carl Gustaf Mosander
Lawrence Berkeley National Laboratory
4.3.2 Discovery
4.4 Abundance
4.4.1 Abundance In Universe
4.5.2 Abundance In Sun
~0.0000002 %~-9999 %
1E-08
0.1
4.6.2 Abundance In Meteorites
4.6.9 Abundance In Earth's Crust
6.2.6 Abundance In Oceans
1.3.2 Abundance In Humans
3 Uses
3.1 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 Fermium metal are limited to research purpose only.
3.1.1 Industrial Uses
Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
3.1.3 Other Uses
Alloys, Mirror Manufacturing
NA
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
NA0.00 Blood/mg dm-3
0
1970
3.6.1 In Bone
0.08 p.p.m.0.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
920.00 °C1,527.00 °C
27
3410
4.6 Boiling Point
5.5 Appearance
5.5.1 Physical State
5.5.2 Color
5.5.3 Luster
5.6 Hardness
5.6.1 Mohs Hardness
2.3.4 Brinell Hardness
2.5.3 Vickers Hardness
3.3 Speed of Sound
3.7 Optical Properties
3.7.1 Refractive Index
5.3.1 Reflectivity
6.5 Allotropes
6.5.2 α Allotropes
Not Available
Not Available
6.5.3 β Allotropes
Not Available
Not Available
6.5.4 γ Allotropes
Not Available
Not Available
7 Chemical
7.1 Chemical Formula
7.3 Isotopes
7.3.1 Known Isotopes
8.2 Electronegativity
8.2.1 Pauling Electronegativity
8.3.2 Sanderson Electronegativity
8.6.3 Allred Rochow Electronegativity
1.4.1 Mulliken-Jaffe Electronegativity
1.6.2 Allen Electronegativity
3.6 Electropositivity
3.6.1 Pauling Electropositivity
4.3 Ionization Energies
4.3.1 1st Energy Level
538.10 kJ/mol627.00 kJ/mol
375.7
26130
5.1.1 2nd Energy Level
1,067.00 kJ/mol1,225.00 kJ/mol
710.2162
28750
6.4.2 3rd Energy Level
1,850.30 kJ/mol2,363.00 kJ/mol
1600
34230
7.5.3 4th Energy Level
4,819.00 kJ/mol3,792.00 kJ/mol
2780
37066
7.8.13 5th Energy Level
5,940.00 kJ/molNA
4305.2
97510
7.9.6 6th Energy Level
7.9.13 7th Energy level
7.10.6 8th Energy Level
7.13.3 9th Energy Level
7.17.1 10th Energy Level
8.5.1 11th Energy Level
11.1.1 12th Energy Level
2.1.1 13th Energy Level
2.4.1 14th Energy Level
2.7.3 15th Energy Level
2.12.2 16th Energy Level
2.14.3 17th Energy Level
3.2.2 18th Energy Level
3.3.2 19th Energy Level
3.8.2 20th Energy Level
3.9.7 21st Energy Level
3.10.4 22nd Energy Level
3.12.2 23rd Energy Level
4.2.1 24th Energy Level
4.2.5 25th Energy Level
5.3.2 26th Energy Level
5.4.5 27th Energy Level
5.7.2 28th Energy Level
5.9.5 29th Energy Level
5.10.2 30th Energy Level
5.13 Electrochemical Equivalent
1.73 g/amp-hr3.20 g/amp-hr
0.16812
8.3209
6.4 Electron Work Function
8.2 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity
9 Atomic
9.1 Atomic Number
9.8 Electron Configuration
[Xe] 5d2 6s2
[Rn] 5f12 7s2
9.10 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Not Known
9.10.1 Crystal Lattice
9.11 Atom
9.12.1 Number of Protons
9.18.2 Number of Neutrons
10.2.7 Number of Electrons
10.5 Radius of an Atom
10.5.1 Atomic Radius
10.9.1 Covalent Radius
10.10.2 Van der Waals Radius
240.00 pm245.00 pm
139
348
10.13 Atomic Weight
138.91 amu257.00 amu
6.94
294
11.4 Atomic Volume
20.73 cm3/molNA
1.39
71.07
12.3 Adjacent Atomic Numbers
12.3.1 Previous Element
12.3.2 Next Element
12.4 Valence Electron Potential
12.7 Lattice Constant
377.20 pmNA
228.58
891.25
13.2 Lattice Angles
13.3 Lattice C/A Ratio
14 Mechanical
14.1 Density
14.1.1 Density At Room Temperature
16.1.3 Density When Liquid (at m.p.)
16.3 Tensile Strength
17.2 Viscosity
17.5 Vapor Pressure
17.5.1 Vapor Pressure at 1000 K
17.10.2 Vapor Pressure at 2000 K
17.14 Elasticity properties
17.14.1 Shear Modulus
17.19.1 Bulk Modulus
19.2.1 Young's Modulus
20.5 Poisson Ratio
20.10 Other Mechanical Properties
21 Magnetic
21.1 Magnetic Characteristics
21.1.1 Specific Gravity
21.4.1 Magnetic Ordering
21.4.2 Permeability
21.6.4 Susceptibility
22.3 Electrical Properties
22.3.1 Electrical Property
22.3.2 Resistivity
22.6.3 Electrical Conductivity
0.01 106/cm ΩNA
0.00666
0.63
23.2.3 Electron Affinity
24 Thermal
24.1 Specific Heat
24.4 Molar Heat Capacity
27.11 J/mol·KNA
16.443
62.7
25.2 Thermal Conductivity
26.4 Critical Temperature
26.10 Thermal Expansion
27.5 Enthalpy
27.5.1 Enthalpy of Vaporization
399.60 kJ/molNA
7.32
799.1
28.2.2 Enthalpy of Fusion
29.1.1 Enthalpy of Atomization
29.7 Standard Molar Entropy
56.90 J/mol.KNA
9.5
198.1