1 Periodic Table
1.1 Symbol
1.2 Group Number
2.3 Period Number
2.4 Block
2.5 Element Family
Probably Post-Transition
Lanthanide
2.6 CAS Number
540856427440600
7429905
54386242
2.7 Space Group Name
2.8 Space Group Number
4 Facts
4.1 Interesting Facts
Not Available
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
4.2 Sources
Synthetically Produced
Found in Minerals, Mining, Ores of Minerals
4.3 History
4.3.1 Who Discovered
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
Marc Delafontaine
4.3.2 Discovery
4.4 Abundance
4.4.1 Abundance In Universe
5.3.1 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
5.3.3 Abundance In Meteorites
6.2.2 Abundance In Earth's Crust
6.3.2 Abundance In Oceans
6.5.2 Abundance In Humans
7 Uses
7.1 Uses & Benefits
- Currently known uses of Ununpentium 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.
7.1.1 Industrial Uses
7.1.2 Medical Uses
7.1.3 Other Uses
Research Purposes
Alloys, Nuclear Research
7.2 Biological Properties
7.2.1 Toxicity
7.2.3 Present in Human Body
7.2.4 In Blood
7.2.6 In Bone
8 Physical
8.1 Melting Point
400.00 °C1,461.00 °C
27
3410
8.3 Boiling Point
1,100.00 °C2,600.00 °C
147
5660
8.5 Appearance
8.5.1 Physical State
8.5.2 Color
8.5.3 Luster
8.6 Hardness
8.6.1 Mohs Hardness
8.8.3 Brinell Hardness
9.2.3 Vickers Hardness
10.3 Speed of Sound
10.4 Optical Properties
10.4.1 Refractive Index
10.4.2 Reflectivity
10.6 Allotropes
10.6.1 α Allotropes
Not Available
Not Available
10.6.2 β Allotropes
Not Available
Not Available
10.6.3 γ Allotropes
Not Available
Not Available
11 Chemical
11.1 Chemical Formula
11.2 Isotopes
11.2.1 Known Isotopes
11.3 Electronegativity
11.3.1 Pauling Electronegativity
11.3.3 Sanderson Electronegativity
11.3.6 Allred Rochow Electronegativity
11.4.2 Mulliken-Jaffe Electronegativity
11.5.2 Allen Electronegativity
11.8 Electropositivity
11.8.1 Pauling Electropositivity
11.9 Ionization Energies
11.9.1 1st Energy Level
538.40 kJ/mol581.00 kJ/mol
375.7
26130
11.9.4 2nd Energy Level
1,756.00 kJ/mol1,140.00 kJ/mol
710.2162
28750
11.9.6 3rd Energy Level
2,653.30 kJ/mol2,204.00 kJ/mol
1600
34230
11.9.9 4th Energy Level
4,679.50 kJ/mol4,100.00 kJ/mol
2780
37066
11.9.12 5th Energy Level
5,721.60 kJ/molNA
4305.2
97510
11.9.14 6th Energy Level
11.9.16 7th Energy level
11.9.19 8th Energy Level
11.9.21 9th Energy Level
11.9.23 10th Energy Level
11.9.26 11th Energy Level
11.9.29 12th Energy Level
11.9.31 13th Energy Level
11.9.34 14th Energy Level
11.9.36 15th Energy Level
11.9.38 16th Energy Level
11.9.40 17th Energy Level
11.9.42 18th Energy Level
11.9.46 19th Energy Level
11.9.50 20th Energy Level
11.9.52 21st Energy Level
11.9.55 22nd Energy Level
11.9.58 23rd Energy Level
11.9.60 24th Energy Level
11.9.62 25th Energy Level
11.9.65 26th Energy Level
11.10.1 27th Energy Level
11.10.3 28th Energy Level
11.11.1 29th Energy Level
12.1.2 30th Energy Level
12.2 Electrochemical Equivalent
NA2.02 g/amp-hr
0.16812
8.3209
12.6 Electron Work Function
12.7 Other Chemical Properties
Chemical Stability, Ionization
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
13 Atomic
13.1 Atomic Number
13.3 Electron Configuration
[Rn] 5f14 6d10 7s2 7p3
[Xe] 4f11 6s2
13.4 Crystal Structure
Not Known
Hexagonal Close Packed (HCP)
13.4.1 Crystal Lattice
13.5 Atom
13.5.1 Number of Protons
13.6.2 Number of Neutrons
13.7.2 Number of Electrons
13.10 Radius of an Atom
13.10.1 Atomic Radius
13.11.1 Covalent Radius
13.13.1 Van der Waals Radius
14.3 Atomic Weight
289.00 amu164.93 amu
6.94
294
14.4 Atomic Volume
NA18.70 cm3/mol
1.39
71.07
14.7 Adjacent Atomic Numbers
14.7.1 Previous Element
14.7.2 Next Element
14.8 Valence Electron Potential
15.3 Lattice Constant
NA357.73 pm
228.58
891.25
15.5 Lattice Angles
15.6 Lattice C/A Ratio
16 Mechanical
16.1 Density
16.1.1 Density At Room Temperature
4.51 g/cm38.79 g/cm3
0.534
40.7
16.2.3 Density When Liquid (at m.p.)
16.3 Tensile Strength
16.4 Viscosity
16.5 Vapor Pressure
16.5.1 Vapor Pressure at 1000 K
16.7.2 Vapor Pressure at 2000 K
17.2 Elasticity properties
17.2.1 Shear Modulus
17.3.3 Bulk Modulus
17.4.2 Young's Modulus
18.2 Poisson Ratio
18.4 Other Mechanical Properties
Unknown
Ductile, Malleable, Sectile
19 Magnetic
19.1 Magnetic Characteristics
19.1.1 Specific Gravity
19.3.1 Magnetic Ordering
Paramagnetic
Paramagnetic
19.3.2 Permeability
19.5.1 Susceptibility
19.7 Electrical Properties
19.7.1 Electrical Property
19.7.2 Resistivity
20.2.1 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
20.3.2 Electron Affinity
21 Thermal
21.1 Specific Heat
21.3 Molar Heat Capacity
NA27.15 J/mol·K
16.443
62.7
21.6 Thermal Conductivity
21.8 Critical Temperature
21.9 Thermal Expansion
21.10 Enthalpy
21.10.1 Enthalpy of Vaporization
NA241.00 kJ/mol
7.32
799.1
21.10.3 Enthalpy of Fusion
21.11.1 Enthalpy of Atomization
22.2 Standard Molar Entropy
NA75.30 J/mol.K
9.5
198.1