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
543862427440600
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
3 Facts
3.1 Interesting Facts
Not Available
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
3.2 Sources
Synthetically Produced
Found in Minerals, Mining, Ores of Minerals
3.3 History
3.3.1 Who Discovered
Gesellschaft für Schwerionenforschung
Marc Delafontaine
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
3.4.3 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
4.1.1 Abundance In Meteorites
4.1.2 Abundance In Earth's Crust
4.2.1 Abundance In Oceans
4.2.2 Abundance In Humans
5 Uses
5.1 Uses & Benefits
- Currently known uses of Roentgenium metal are limited to research purpose only.
- Holmium metal has an ability to absorb neutrons, so this metal is used in nuclear reactors to keep the chain reactions of elements under control.
-
Alloys of Holmium are used to produce Magnet.
5.1.1 Industrial Uses
5.1.2 Medical Uses
5.1.3 Other Uses
Research Purposes
Alloys, Nuclear Research
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
5.2.4 In Bone
2 Physical
2.1 Melting Point
2.2 Boiling Point
2.5 Appearance
2.5.1 Physical State
2.5.2 Color
2.5.3 Luster
2.6 Hardness
2.6.1 Mohs Hardness
2.7.3 Brinell Hardness
3.5.1 Vickers Hardness
3.7 Speed of Sound
3.10 Optical Properties
3.10.1 Refractive Index
3.10.2 Reflectivity
3.11 Allotropes
3.11.1 α Allotropes
Not Available
Not Available
3.11.2 β Allotropes
Not Available
Not Available
3.11.3 γ Allotropes
Not Available
Not Available
4 Chemical
4.1 Chemical Formula
4.2 Isotopes
4.2.1 Known Isotopes
5.5 Electronegativity
5.5.1 Pauling Electronegativity
5.5.3 Sanderson Electronegativity
5.6.3 Allred Rochow Electronegativity
5.7.2 Mulliken-Jaffe Electronegativity
5.7.5 Allen Electronegativity
5.8 Electropositivity
5.8.1 Pauling Electropositivity
5.9 Ionization Energies
5.9.1 1st Energy Level
1,022.70 kJ/mol581.00 kJ/mol
375.7
26130
5.9.5 2nd Energy Level
2,074.40 kJ/mol1,140.00 kJ/mol
710.2162
28750
5.9.8 3rd Energy Level
3,077.90 kJ/mol2,204.00 kJ/mol
1600
34230
6.2.5 4th Energy Level
4,052.40 kJ/mol4,100.00 kJ/mol
2780
37066
6.2.8 5th Energy Level
5,306.70 kJ/molNA
4305.2
97510
7.1.2 6th Energy Level
7.1.3 7th Energy level
7.2.1 8th Energy Level
7.4.2 9th Energy Level
7.4.4 10th Energy Level
7.4.7 11th Energy Level
7.4.9 12th Energy Level
7.5.2 13th Energy Level
7.5.4 14th Energy Level
7.6.4 15th Energy Level
8.2.2 16th Energy Level
8.2.4 17th Energy Level
8.3.3 18th Energy Level
8.3.6 19th Energy Level
8.3.8 20th Energy Level
8.3.11 21st Energy Level
8.3.13 22nd Energy Level
8.3.16 23rd Energy Level
8.3.19 24th Energy Level
8.3.21 25th Energy Level
8.4.2 26th Energy Level
8.4.4 27th Energy Level
8.6.2 28th Energy Level
8.6.4 29th Energy Level
8.7.1 30th Energy Level
8.8 Electrochemical Equivalent
NA2.02 g/amp-hr
0.16812
8.3209
9.2 Electron Work Function
9.6 Other Chemical Properties
NA
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
[Rn] 5f14 6d9 7s2
[Xe] 4f11 6s2
10.3 Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.5 Number of Neutrons
10.5.3 Number of Electrons
10.6 Radius of an Atom
10.6.1 Atomic Radius
10.7.1 Covalent Radius
10.7.3 Van der Waals Radius
10.9 Atomic Weight
281.00 amu164.93 amu
6.94
294
10.12 Atomic Volume
NA18.70 cm3/mol
1.39
71.07
10.14 Adjacent Atomic Numbers
10.14.1 Previous Element
10.14.2 Next Element
10.15 Valence Electron Potential
10.18 Lattice Constant
NA357.73 pm
228.58
891.25
11.2 Lattice Angles
11.3 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
28.70 g/cm38.79 g/cm3
0.534
40.7
12.2.1 Density When Liquid (at m.p.)
12.5 Tensile Strength
12.6 Viscosity
12.8 Vapor Pressure
12.8.1 Vapor Pressure at 1000 K
12.8.4 Vapor Pressure at 2000 K
12.9 Elasticity properties
12.9.1 Shear Modulus
12.9.5 Bulk Modulus
12.10.1 Young's Modulus
13.2 Poisson Ratio
13.4 Other Mechanical Properties
Unknown
Ductile, Malleable, Sectile
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
15.1.1 Magnetic Ordering
15.1.2 Permeability
15.2.3 Susceptibility
15.6 Electrical Properties
15.6.1 Electrical Property
15.6.2 Resistivity
15.6.5 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
15.6.8 Electron Affinity
17 Thermal
17.1 Specific Heat
17.4 Molar Heat Capacity
NA27.15 J/mol·K
16.443
62.7
17.5 Thermal Conductivity
17.7 Critical Temperature
17.9 Thermal Expansion
17.11 Enthalpy
17.11.1 Enthalpy of Vaporization
NA241.00 kJ/mol
7.32
799.1
17.12.1 Enthalpy of Fusion
17.13.1 Enthalpy of Atomization
17.16 Standard Molar Entropy
NA75.30 J/mol.K
9.5
198.1