1 Periodic Table
1.1 Symbol
1.2 Group Number
2.2 Period Number
2.3 Block
2.4 Element Family
2.5 CAS Number
74406007440600
7429905
54386242
2.7 Space Group Name
2.8 Space Group Number
3 Facts
3.1 Interesting Facts
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
3.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
3.3 History
3.3.1 Who Discovered
Marc Delafontaine
Marc Delafontaine
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
5 * 10-8 %5 * 10-8 %
5E-09
0.11
4.2.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
4.2.6 Abundance In Meteorites
4.3.1 Abundance In Earth's Crust
5.2.2 Abundance In Oceans
5.3.2 Abundance In Humans
7 Uses
7.1 Uses & Benefits
- 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.
- 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
Alloys, Nuclear Research
Alloys, Nuclear Research
7.2 Biological Properties
7.2.1 Toxicity
7.2.2 Present in Human Body
7.2.3 In Blood
7.2.5 In Bone
8 Physical
8.1 Melting Point
1,461.00 °C1,461.00 °C
27
3410
8.2 Boiling Point
2,600.00 °C2,600.00 °C
147
5660
8.4 Appearance
8.4.1 Physical State
8.4.2 Color
Silvery White
Silvery White
8.4.3 Luster
8.5 Hardness
8.5.1 Mohs Hardness
8.6.2 Brinell Hardness
746.00 MPa746.00 MPa
0.14
3490
8.6.5 Vickers Hardness
481.00 MPa481.00 MPa
121
3430
9.3 Speed of Sound
2,760.00 m/s2,760.00 m/s
818
16200
9.5 Optical Properties
9.5.1 Refractive Index
9.5.3 Reflectivity
9.7 Allotropes
9.7.1 α Allotropes
Not Available
Not Available
9.7.2 β Allotropes
Not Available
Not Available
9.7.3 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
10.4.3 Sanderson Electronegativity
10.5.3 Allred Rochow Electronegativity
10.5.4 Mulliken-Jaffe Electronegativity
10.6.3 Allen Electronegativity
10.7 Electropositivity
10.7.1 Pauling Electropositivity
10.8 Ionization Energies
10.8.1 1st Energy Level
581.00 kJ/mol581.00 kJ/mol
375.7
26130
10.8.2 2nd Energy Level
1,140.00 kJ/mol1,140.00 kJ/mol
710.2162
28750
10.8.5 3rd Energy Level
2,204.00 kJ/mol2,204.00 kJ/mol
1600
34230
10.8.8 4th Energy Level
4,100.00 kJ/mol4,100.00 kJ/mol
2780
37066
10.8.12 5th Energy Level
10.8.14 6th Energy Level
10.8.17 7th Energy level
10.8.20 8th Energy Level
10.8.22 9th Energy Level
10.8.25 10th Energy Level
10.8.28 11th Energy Level
10.8.31 12th Energy Level
10.8.33 13th Energy Level
10.8.37 14th Energy Level
10.8.40 15th Energy Level
10.8.43 16th Energy Level
10.8.45 17th Energy Level
10.8.48 18th Energy Level
10.8.51 19th Energy Level
10.8.54 20th Energy Level
10.8.57 21st Energy Level
10.8.60 22nd Energy Level
10.8.63 23rd Energy Level
10.8.66 24th Energy Level
10.8.69 25th Energy Level
10.8.71 26th Energy Level
10.8.74 27th Energy Level
10.8.77 28th Energy Level
10.8.80 29th Energy Level
10.9.2 30th Energy Level
10.10 Electrochemical Equivalent
2.02 g/amp-hr2.02 g/amp-hr
0.16812
8.3209
10.13 Electron Work Function
11.2 Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
12 Atomic
12.1 Atomic Number
13.4 Electron Configuration
[Xe] 4f11 6s2
[Xe] 4f11 6s2
13.5 Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
13.5.1 Crystal Lattice
13.6 Atom
13.6.1 Number of Protons
13.9.2 Number of Neutrons
13.9.5 Number of Electrons
13.11 Radius of an Atom
13.11.1 Atomic Radius
176.00 pm176.00 pm
112
265
13.12.3 Covalent Radius
192.00 pm192.00 pm
96
260
13.12.4 Van der Waals Radius
216.00 pm216.00 pm
139
348
13.14 Atomic Weight
164.93 amu164.93 amu
6.94
294
13.17 Atomic Volume
18.70 cm3/mol18.70 cm3/mol
1.39
71.07
13.21 Adjacent Atomic Numbers
13.21.1 Previous Element
13.21.2 Next Element
13.22 Valence Electron Potential
47.90 (-eV)47.90 (-eV)
8
392.42
13.24 Lattice Constant
357.73 pm357.73 pm
228.58
891.25
13.29 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
13.30 Lattice C/A Ratio
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
8.79 g/cm38.79 g/cm3
0.534
40.7
16.2.1 Density When Liquid (at m.p.)
8.34 g/cm38.34 g/cm3
0.512
20
16.4 Tensile Strength
16.6 Viscosity
16.8 Vapor Pressure
16.8.1 Vapor Pressure at 1000 K
0.00 (Pa)0.00 (Pa)
2.47E-11
121
16.11.2 Vapor Pressure at 2000 K
16.12 Elasticity properties
16.12.1 Shear Modulus
26.30 GPa26.30 GPa
1.3
222
16.13.3 Bulk Modulus
40.20 GPa40.20 GPa
1.6
462
16.13.5 Young's Modulus
64.80 GPa64.80 GPa
1.7
528
16.15 Poisson Ratio
17.2 Other Mechanical Properties
Ductile, Malleable, Sectile
Ductile, Malleable, Sectile
18 Magnetic
18.1 Magnetic Characteristics
18.1.1 Specific Gravity
18.2.1 Magnetic Ordering
Paramagnetic
Paramagnetic
18.2.2 Permeability
19.1.2 Susceptibility
19.3 Electrical Properties
19.3.1 Electrical Property
19.3.2 Resistivity
814.00 nΩ·m814.00 nΩ·m
0.18
961
19.3.5 Electrical Conductivity
0.01 106/cm Ω0.01 106/cm Ω
0.00666
0.63
19.4.4 Electron Affinity
50.00 kJ/mol50.00 kJ/mol
0
222.8
21 Thermal
21.1 Specific Heat
0.16 J/(kg K)0.16 J/(kg K)
0.11
3.6
21.2 Molar Heat Capacity
27.15 J/mol·K27.15 J/mol·K
16.443
62.7
22.2 Thermal Conductivity
16.20 W/m·K16.20 W/m·K
6.3
429
22.5 Critical Temperature
22.7 Thermal Expansion
11.20 µm/(m·K)11.20 µm/(m·K)
4.5
97
22.10 Enthalpy
22.10.1 Enthalpy of Vaporization
241.00 kJ/mol241.00 kJ/mol
7.32
799.1
22.12.2 Enthalpy of Fusion
11.76 kJ/mol11.76 kJ/mol
2.1
35.23
22.13.2 Enthalpy of Atomization
301.00 kJ/mol301.00 kJ/mol
61.5
837
22.15 Standard Molar Entropy
75.30 J/mol.K75.30 J/mol.K
9.5
198.1