1 Periodic Table
1.1 Symbol
1.2 Group Number
2.3 Period Number
2.7 Block
2.8 Element Family
2.9 CAS Number
74403487440520
7429905
54386242
2.10 Space Group Name
2.11 Space Group Number
3 Facts
3.1 Interesting Facts
Not Available
- Erbium metal is used as alloyed with Vanadium to make it softer.
- Recent studies shows that it is helpful for metabolism.
3.2 Sources
Obtained by Treating Radium with Neutrons, Ores of metals
Mining
3.3 History
3.3.1 Who Discovered
Friedrich Oskar Giesel
Carl Gustaf Mosander
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
3.5.1 Abundance In Sun
~-9999 %~0.0000001 %
1E-08
0.1
3.8.1 Abundance In Meteorites
3.9.1 Abundance In Earth's Crust
3.12.1 Abundance In Oceans
4.1.2 Abundance In Humans
5 Uses
5.1 Uses & Benefits
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
- It has a tendency to get tarnished in the open air, but when alloyed with elements like erbium, vanadium, its hardness levels decreases.
- Its compounds like Erbium oxide is used in safety glasses of welders and metal workers.
5.1.1 Industrial Uses
5.1.2 Medical Uses
5.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
5.2 Biological Properties
5.2.1 Toxicity
5.2.2 Present in Human Body
5.2.3 In Blood
0.00 Blood/mg dm-3NA
0
1970
5.2.5 In Bone
6 Physical
6.1 Melting Point
1,227.00 °C1,522.00 °C
27
3410
6.5 Boiling Point
3,200.00 °C2,510.00 °C
147
5660
7.2 Appearance
7.2.1 Physical State
7.2.2 Color
Silvery White
Silvery White
7.2.3 Luster
7.3 Hardness
7.3.1 Mohs Hardness
7.5.1 Brinell Hardness
7.7.3 Vickers Hardness
7.9 Speed of Sound
7.10 Optical Properties
7.10.1 Refractive Index
7.12.1 Reflectivity
9.2 Allotropes
9.2.1 α Allotropes
Not Available
Not Available
9.2.2 β Allotropes
Not Available
Not Available
9.2.3 γ Allotropes
Not Available
Not Available
10 Chemical
10.1 Chemical Formula
10.2 Isotopes
10.2.1 Known Isotopes
10.3 Electronegativity
10.3.1 Pauling Electronegativity
10.4.4 Sanderson Electronegativity
10.5.4 Allred Rochow Electronegativity
11.1.2 Mulliken-Jaffe Electronegativity
11.3.1 Allen Electronegativity
11.5 Electropositivity
11.5.1 Pauling Electropositivity
12.2 Ionization Energies
12.2.1 1st Energy Level
499.00 kJ/mol589.30 kJ/mol
375.7
26130
12.4.2 2nd Energy Level
1,170.00 kJ/mol1,150.00 kJ/mol
710.2162
28750
12.5.1 3rd Energy Level
1,900.00 kJ/mol2,194.00 kJ/mol
1600
34230
12.6.1 4th Energy Level
4,700.00 kJ/mol4,120.00 kJ/mol
2780
37066
12.7.1 5th Energy Level
12.8.1 6th Energy Level
12.9.2 7th Energy level
12.9.3 8th Energy Level
12.9.5 9th Energy Level
12.9.6 10th Energy Level
12.9.8 11th Energy Level
12.10.1 12th Energy Level
12.10.2 13th Energy Level
12.10.3 14th Energy Level
12.10.4 15th Energy Level
12.10.5 16th Energy Level
12.10.6 17th Energy Level
12.10.7 18th Energy Level
12.10.8 19th Energy Level
12.10.9 20th Energy Level
12.10.10 21st Energy Level
12.10.11 22nd Energy Level
12.10.12 23rd Energy Level
12.10.13 24th Energy Level
12.10.14 25th Energy Level
12.10.15 26th Energy Level
12.10.16 27th Energy Level
12.10.17 28th Energy Level
12.10.18 29th Energy Level
12.10.19 30th Energy Level
12.11 Electrochemical Equivalent
2.82 g/amp-hr2.08 g/amp-hr
0.16812
8.3209
12.12 Electron Work Function
12.13 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Solubility
13 Atomic
13.1 Atomic Number
13.2 Electron Configuration
[Rn] 6d1 7s2
[Xe] 4f12 6s2
13.3 Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
13.3.1 Crystal Lattice
13.4 Atom
13.4.1 Number of Protons
13.4.2 Number of Neutrons
13.4.3 Number of Electrons
13.5 Radius of an Atom
13.5.1 Atomic Radius
195.00 pm176.00 pm
112
265
13.5.2 Covalent Radius
13.5.3 Van der Waals Radius
13.6 Atomic Weight
227.00 amu167.26 amu
6.94
294
13.7 Atomic Volume
22.54 cm3/mol18.40 cm3/mol
1.39
71.07
13.8 Adjacent Atomic Numbers
13.8.1 Previous Element
13.8.2 Next Element
13.9 Valence Electron Potential
38.60 (-eV)49.00 (-eV)
8
392.42
13.10 Lattice Constant
567.00 pm355.88 pm
228.58
891.25
13.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
13.12 Lattice C/A Ratio
14 Mechanical
14.1 Density
14.1.1 Density At Room Temperature
10.00 g/cm39.07 g/cm3
0.534
40.7
14.1.2 Density When Liquid (at m.p.)
14.2 Tensile Strength
14.3 Viscosity
14.4 Vapor Pressure
14.4.1 Vapor Pressure at 1000 K
14.4.2 Vapor Pressure at 2000 K
14.5 Elasticity properties
14.5.1 Shear Modulus
14.5.2 Bulk Modulus
14.5.3 Young's Modulus
14.6 Poisson Ratio
14.7 Other Mechanical Properties
15 Magnetic
15.1 Magnetic Characteristics
15.1.1 Specific Gravity
15.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
15.1.3 Permeability
15.1.4 Susceptibility
15.2 Electrical Properties
15.2.1 Electrical Property
15.2.2 Resistivity
15.2.3 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
15.2.4 Electron Affinity
16 Thermal
16.1 Specific Heat
0.12 J/(kg K)0.17 J/(kg K)
0.11
3.6
16.2 Molar Heat Capacity
27.20 J/mol·K28.12 J/mol·K
16.443
62.7
16.3 Thermal Conductivity
12.00 W/m·K14.50 W/m·K
6.3
429
16.4 Critical Temperature
16.5 Thermal Expansion
16.6 Enthalpy
16.6.1 Enthalpy of Vaporization
NA261.00 kJ/mol
7.32
799.1
16.6.2 Enthalpy of Fusion
16.6.3 Enthalpy of Atomization
301.00 kJ/mol314.00 kJ/mol
61.5
837
16.7 Standard Molar Entropy
56.50 J/mol.K73.10 J/mol.K
9.5
198.1