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
74402797440008
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- At times Terbium metal acts same as Calcium.
- Terbium metal closely similar to Lanthanum metal.
- 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, Found with Other Rare Earth Metals, Mining, Ores of Minerals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Carl Gustaf Mosander
Carl Auer von Welsbach
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
5 * 10-8 %1 * 10-6 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.00000001 %~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
- Terbium salts are used in optical devices like laser devices.
-
Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
- 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
Electronic Industry
Aerospace Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
3.1.3 Other Uses
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
3.2.4 In Bone
4 Physical
4.1 Melting Point
1,356.00 °C1,010.00 °C
27
3410
4.2 Boiling Point
3,123.00 °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
677.00 MPa265.00 MPa
0.14
3490
4.4.3 Vickers Hardness
863.00 MPa345.00 MPa
121
3430
4.5 Speed of Sound
2,620.00 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
603.40 kJ/mol533.10 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,174.80 kJ/mol1,040.00 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
2,417.00 kJ/mol2,130.00 kJ/mol
1600
34230
5.5.4 4th Energy Level
4,203.00 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
1.98 g/amp-hr1.79 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Corrosion, Flammable, Ionization
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
[Xe] 4f9 6s2
[Xe] 4f4 6s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
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
177.00 pm181.00 pm
112
265
6.5.2 Covalent Radius
194.00 pm201.00 pm
96
260
6.5.3 Van der Waals Radius
221.00 pm229.00 pm
139
348
6.6 Atomic Weight
158.93 amu144.24 amu
6.94
294
6.7 Atomic Volume
19.20 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
46.80 (-eV)43.40 (-eV)
8
392.42
6.10 Lattice Constant
360.10 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
8.23 g/cm37.01 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
7.65 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
0.00 (Pa)0.00 (Pa)
2.47E-11
121
7.4.2 Vapor Pressure at 2000 K
12.50 (Pa)101.00 (Pa)
2.62E-10
774
7.5 Elasticity properties
7.5.1 Shear Modulus
22.10 GPa16.30 GPa
1.3
222
7.5.2 Bulk Modulus
38.70 GPa31.80 GPa
1.6
462
7.5.3 Young's Modulus
55.70 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
1.15 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
0.18 J/(kg K)0.19 J/(kg K)
0.11
3.6
9.2 Molar Heat Capacity
28.91 J/mol·K27.45 J/mol·K
16.443
62.7
9.3 Thermal Conductivity
11.10 W/m·K16.50 W/m·K
6.3
429
9.4 Critical Temperature
9.5 Thermal Expansion
10.30 µm/(m·K)9.60 µm/(m·K)
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
330.90 kJ/mol273.00 kJ/mol
7.32
799.1
9.6.2 Enthalpy of Fusion
10.80 kJ/mol7.14 kJ/mol
2.1
35.23
9.6.3 Enthalpy of Atomization
314.00 kJ/mol322.00 kJ/mol
61.5
837
9.7 Standard Molar Entropy
73.20 J/mol.K71.50 J/mol.K
9.5
198.1