1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
1.6 CAS Number
74401997440008
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- Samarium metals helps stimulating body metabolism.
- Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
- Neodymium is not found free in nature, hence it is not a native metal.
- Neodymium metal found in minerals like Monazite and Bastnaesite.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Lecoq de Boisbaudran
Carl Auer von Welsbach
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
5 * 10-7 %1 * 10-6 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.0000001 %~0.0000003 %
1E-08
0.1
2.4.3 Abundance In Meteorites
2.4.4 Abundance In Earth's Crust
2.4.5 Abundance In Oceans
2.4.6 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
- Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.
- Neodymium-Iron-boron alloy is used to make permanent magnets.
- It is used in microphones, Mp3 player, loudspeakers, mobile phones, etc.
3.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Aerospace Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
3.1.3 Other Uses
Alloys, In Nuclear Reactors
Alloys
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
0.01 Blood/mg dm-3NA
0
1970
3.2.4 In Bone
4 Physical
4.1 Melting Point
1,072.00 °C1,010.00 °C
27
3410
4.2 Boiling Point
1,900.00 °C3,127.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
Silvery White
Silvery White
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.2 Brinell Hardness
441.00 MPa265.00 MPa
0.14
3490
4.4.3 Vickers Hardness
412.00 MPa345.00 MPa
121
3430
4.5 Speed of Sound
2,130.00 m/s2,330.00 m/s
818
16200
4.6 Optical Properties
4.6.1 Refractive Index
4.6.2 Reflectivity
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
5.3.2 Sanderson Electronegativity
5.3.3 Allred Rochow Electronegativity
5.3.4 Mulliken-Jaffe Electronegativity
5.3.5 Allen Electronegativity
5.4 Electropositivity
5.4.1 Pauling Electropositivity
5.5 Ionization Energies
5.5.1 1st Energy Level
544.50 kJ/mol533.10 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,070.00 kJ/mol1,040.00 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
2,260.00 kJ/mol2,130.00 kJ/mol
1600
34230
5.5.4 4th Energy Level
3,990.00 kJ/mol3,900.00 kJ/mol
2780
37066
5.5.5 5th Energy Level
5.5.6 6th Energy Level
5.5.7 7th Energy level
5.5.8 8th Energy Level
5.5.9 9th Energy Level
5.5.10 10th Energy Level
5.5.11 11th Energy Level
5.5.12 12th Energy Level
5.5.13 13th Energy Level
5.5.14 14th Energy Level
5.5.15 15th Energy Level
5.5.16 16th Energy Level
5.5.17 17th Energy Level
5.5.18 18th Energy Level
5.5.19 19th Energy Level
5.5.20 20th Energy Level
5.5.21 21st Energy Level
5.5.22 22nd Energy Level
5.5.23 23rd Energy Level
5.5.24 24th Energy Level
5.5.25 25th Energy Level
5.5.26 26th Energy Level
5.5.27 27th Energy Level
5.5.28 28th Energy Level
5.5.29 29th Energy Level
5.5.30 30th Energy Level
5.6 Electrochemical Equivalent
1.87 g/amp-hr1.79 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes
Chemical Stability, Corrosion, Flammable, Ionization
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
[Xe] 4f6 6s2
[Xe] 4f4 6s2
6.3 Crystal Structure
Rhombohedral (RHO)
Double Hexagonal Close Packed (DHCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
6.4.2 Number of Neutrons
6.4.3 Number of Electrons
6.5 Radius of an Atom
6.5.1 Atomic Radius
180.00 pm181.00 pm
112
265
6.5.2 Covalent Radius
198.00 pm201.00 pm
96
260
6.5.3 Van der Waals Radius
229.00 pm229.00 pm
139
348
6.6 Atomic Weight
150.36 amu144.24 amu
6.94
294
6.7 Atomic Volume
19.95 cm3/mol20.60 cm3/mol
1.39
71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
44.80 (-eV)43.40 (-eV)
8
392.42
6.10 Lattice Constant
362.10 pm365.80 pm
228.58
891.25
6.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
7.52 g/cm37.01 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
7.16 g/cm36.89 g/cm3
0.512
20
7.2 Tensile Strength
7.3 Viscosity
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
0.94 (Pa)0.00 (Pa)
2.47E-11
121
7.4.2 Vapor Pressure at 2000 K
NA101.00 (Pa)
2.62E-10
774
7.5 Elasticity properties
7.5.1 Shear Modulus
19.50 GPa16.30 GPa
1.3
222
7.5.2 Bulk Modulus
37.80 GPa31.80 GPa
1.6
462
7.5.3 Young's Modulus
49.70 GPa41.40 GPa
1.7
528
7.6 Poisson Ratio
7.7 Other Mechanical Properties
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
8.1.3 Permeability
8.1.4 Susceptibility
8.2 Electrical Properties
8.2.1 Electrical Property
8.2.2 Resistivity
0.94 nΩ·m643.00 nΩ·m
0.18
961
8.2.3 Electrical Conductivity
0.01 106/cm Ω0.02 106/cm Ω
0.00666
0.63
8.2.4 Electron Affinity
50.00 kJ/mol50.00 kJ/mol
0
222.8
9 Thermal
9.1 Specific Heat
0.20 J/(kg K)0.19 J/(kg K)
0.11
3.6
9.2 Molar Heat Capacity
29.54 J/mol·K27.45 J/mol·K
16.443
62.7
9.3 Thermal Conductivity
13.30 W/m·K16.50 W/m·K
6.3
429
9.4 Critical Temperature
9.5 Thermal Expansion
12.70 µm/(m·K)9.60 µm/(m·K)
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
166.40 kJ/mol273.00 kJ/mol
7.32
799.1
9.6.2 Enthalpy of Fusion
8.62 kJ/mol7.14 kJ/mol
2.1
35.23
9.6.3 Enthalpy of Atomization
209.00 kJ/mol322.00 kJ/mol
61.5
837
1.3 Standard Molar Entropy
69.60 J/mol.K71.50 J/mol.K
9.5
198.1