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Er Element
f
Erbium
Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Periodic Table
0
Symbol
Er 0
Group Number
Not Available 0
Period Number
6 2
Block
f block 0
Element Family
Lanthanide 0
CAS Number
7440520 35
Space Group Name
P63/mmc 0
Space Group Number
194.00 5
Facts
0
Interesting Facts
Erbium metal is used as alloyed with Vanadium to make it softer.
Recent studies shows that it is helpful for metabolism.
0
Sources
Mining 0
History
0
Who Discovered
Carl Gustaf Mosander 0
Discovery
In 1842 0
Abundance
0
Abundance In Universe
2 * 10
-7
% 22
Abundance In Sun
~0.0000001 % 26
Abundance In Meteorites
0.00 % 36
Abundance In Earth's Crust
0.00 % 32
Abundance In Oceans
0.00 % 36
Abundance In Humans
Not Available 0
Uses
0
Uses & Benefits
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.
0
Industrial Uses
Chemical Industry 0
Medical Uses
NA 0
Other Uses
Alloys 0
Biological Properties
0
Toxicity
Mildly Toxic 0
Present in Human Body
No 0
In Blood
Not Available 0
In Bone
Not Available 0
Physical
0
Melting Point
1,522.00 °C 28
Boiling Point
2,510.00 °C 44
Appearance
0
Physical State
Solid 0
Color
Silvery White 0
Luster
Lustrous 0
Hardness
0
Mohs Hardness
Not Available 0
Brinell Hardness
814.00 MPa 11
Vickers Hardness
589.00 MPa 19
Speed of Sound
2,830.00 m/s 28
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Er 0
Isotopes
0
Known Isotopes
31 8
Electronegativity
0
Pauling Electronegativity
1.24 36
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.11 29
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
Not Available 0
Electropositivity
0
Pauling Electropositivity
2.76 18
Ionization Energies
0
1st Energy Level
589.30 kJ/mol 59
2nd Energy Level
1,150.00 kJ/mol 68
3rd Energy Level
2,194.00 kJ/mol 65
4th Energy Level
4,120.00 kJ/mol 33
5th Energy Level
Not Available 0
6th Energy Level
Not Available 0
7th Energy level
Not Available 0
8th Energy Level
Not Available 0
9th Energy Level
Not Available 0
10th Energy Level
Not Available 0
11th Energy Level
Not Available 0
12th Energy Level
Not Available 0
13th Energy Level
Not Available 0
14th Energy Level
Not Available 0
15th Energy Level
Not Available 0
16th Energy Level
Not Available 0
17th Energy Level
Not Available 0
18th Energy Level
Not Available 0
19th Energy Level
Not Available 0
20th Energy Level
Not Available 0
21st Energy Level
Not Available 0
22nd Energy Level
Not Available 0
23rd Energy Level
Not Available 0
24th Energy Level
Not Available 0
25th Energy Level
Not Available 0
26th Energy Level
Not Available 0
27th Energy Level
Not Available 0
28th Energy Level
Not Available 0
29th Energy Level
Not Available 0
30th Energy Level
Not Available 0
Electrochemical Equivalent
2.08 g/amp-hr 28
Electron Work Function
Not Available 0
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility 0
Atomic
0
Atomic Number
68 48
Electron Configuration
[Xe] 4f
12
6s
2
0
Crystal Structure
Hexagonal Close Packed (HCP) 0
Crystal Lattice
HCP-Crystal-Structure-of-Erbium.jpg#100 0
Atom
0
Number of Protons
68 47
Number of Neutrons
99 33
Number of Electrons
68 47
Radius of an Atom
0
Atomic Radius
176.00 pm 18
Covalent Radius
189.00 pm 19
Van der Waals Radius
Not Available 0
Atomic Weight
167.26 amu 43
Atomic Volume
18.40 cm3/mol 25
Adjacent Atomic Numbers
0
Previous Element
79 0
Next Element
75 0
Valence Electron Potential
49.00 (-eV) 29
Lattice Constant
355.88 pm 39
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
1.57 17
Mechanical
0
Density
0
Density At Room Temperature
9.07 g/cm
3
42
Density When Liquid (at m.p.)
8.86 g/cm3 23
Tensile Strength
Not Available 0
Viscosity
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
0.00 (Pa) 20
Vapor Pressure at 2000 K
Not Available 0
Elasticity properties
0
Shear Modulus
28.30 GPa 25
Bulk Modulus
44.40 GPa 27
Young's Modulus
69.90 GPa 29
Poisson Ratio
0.24 28
Other Mechanical Properties
Malleable 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
9.07 32
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Conductor 0
Resistivity
0.86 nΩ·m 63
Electrical Conductivity
0.01 10
6
/cm Ω 53
Electron Affinity
50.00 kJ/mol 21
Thermal
0
Specific Heat
0.17 J/(kg K) 34
Molar Heat Capacity
28.12 J/mol·K 11
Thermal Conductivity
14.50 W/m·K 55
Critical Temperature
Not Available 0
Thermal Expansion
12.20 µm/(m·K) 31
Enthalpy
0
Enthalpy of Vaporization
261.00 kJ/mol 35
Enthalpy of Fusion
17.20 kJ/mol 15
Enthalpy of Atomization
314.00 kJ/mol 33
Standard Molar Entropy
73.10 J/mol.K 11
Summary >>
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