1 Periodic Table
1.1 Symbol
Ho
1.2 Group Number
Not Available
Rank: N/A (Overall) ▶
0
17
1.3 Period Number
1.4 Block
f block
1.5 Element Family
Lanthanide
1.6 CAS Number
7440600
Rank: 29 (Overall) ▶
7429905
54386242
1.7 Space Group Name
P63/mmc
1.8 Space Group Number
194.00
Rank: 5 (Overall) ▶
11
229
2 Facts
2.1 Interesting Facts
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Marc Delafontaine
2.3.2 Discovery
In 1878
2.4 Abundance
2.4.1 Abundance In Universe
5 * 10-8 %
Rank: 27 (Overall) ▶
5E-09
0.11
2.4.2 Abundance In Sun
~-9999 %
Rank: N/A (Overall) ▶
1E-08
0.1
2.4.3 Abundance In Meteorites
0.00 %
Rank: 43 (Overall) ▶
1.7E-07
22
2.4.4 Abundance In Earth's Crust
0.00 %
Rank: 38 (Overall) ▶
9.9E-12
8.1
2.4.5 Abundance In Oceans
0.00 %
Rank: 41 (Overall) ▶
2E-23
1.1
2.4.6 Abundance In Humans
Not Available
Rank: N/A (Overall) ▶
1E-13
1.4
3 Uses
3.1 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.
3.1.1 Industrial Uses
NA
3.1.2 Medical Uses
NA
3.1.3 Other Uses
Alloys, Nuclear Research
3.2 Biological Properties
3.2.1 Toxicity
Low Toxic
3.2.2 Present in Human Body
✔
✘
27% - Lanthanide Series Metals have it !
▶
3.2.3 In Blood
Not Available
Rank: N/A (Overall) ▶
0
1970
3.2.4 In Bone
Not Available
Rank: N/A (Overall) ▶
0
170000
4 Physical
4.1 Melting Point
1,461.00 °C
Rank: 30 (Overall) ▶
27
3410
4.2 Boiling Point
2,600.00 °C
Rank: 42 (Overall) ▶
147
5660
4.3 Appearance
4.3.1 Physical State
Solid
4.3.2 Color
Silvery White
4.3.3 Luster
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Not Available
Rank: N/A (Overall) ▶
0.2
8.5
4.4.2 Brinell Hardness
746.00 MPa
Rank: 13 (Overall) ▶
0.14
3490
4.4.3 Vickers Hardness
481.00 MPa
Rank: 23 (Overall) ▶
121
3430
4.5 Speed of Sound
2,760.00 m/s
Rank: 30 (Overall) ▶
818
16200
4.6 Optical Properties
4.6.1 Refractive Index
Not Available
Rank: N/A (Overall) ▶
1.000933
1.7229
4.6.2 Reflectivity
Not Available
Rank: N/A (Overall) ▶
58
97
4.7 Allotropes
✔
✘
No - Lanthanide Series Metals has it !
▶
4.7.1 α Allotropes
Not Available
4.7.2 β Allotropes
Not Available
4.7.3 γ Allotropes
Not Available
5 Chemical
5.1 Chemical Formula
Ho
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.23
Rank: 37 (Overall) ▶
0.7
2.54
5.3.2 Sanderson Electronegativity
Not Available
Rank: N/A (Overall) ▶
0.22
2.56
5.3.3 Allred Rochow Electronegativity
1.10
Rank: 30 (Overall) ▶
0.86
1.82
5.3.4 Mulliken-Jaffe Electronegativity
Not Available
Rank: N/A (Overall) ▶
0.62
2.48
5.3.5 Allen Electronegativity
Not Available
Rank: N/A (Overall) ▶
0.659
2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.77
Rank: 17 (Overall) ▶
1.46
3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
581.00 kJ/mol
Rank: 62 (Overall) ▶
375.7
26130
5.5.2 2nd Energy Level
1,140.00 kJ/mol
Rank: 70 (Overall) ▶
710.2162
28750
5.5.3 3rd Energy Level
2,204.00 kJ/mol
Rank: 63 (Overall) ▶
1600
34230
5.5.4 4th Energy Level
4,100.00 kJ/mol
Rank: 34 (Overall) ▶
2780
37066
5.5.5 5th Energy Level
Not Available
Rank: N/A (Overall) ▶
4305.2
97510
5.5.6 6th Energy Level
Not Available
Rank: N/A (Overall) ▶
5715.8
105800
5.5.7 7th Energy level
Not Available
Rank: N/A (Overall) ▶
7226.8
114300
5.5.8 8th Energy Level
Not Available
Rank: N/A (Overall) ▶
8857.4
125300
5.5.9 9th Energy Level
Not Available
Rank: N/A (Overall) ▶
14110
134700
5.5.10 10th Energy Level
Not Available
Rank: N/A (Overall) ▶
17100
144300
5.5.11 11th Energy Level
Not Available
Rank: N/A (Overall) ▶
19900
169988
5.5.12 12th Energy Level
Not Available
Rank: N/A (Overall) ▶
22219
189368
5.5.13 13th Energy Level
Not Available
Rank: N/A (Overall) ▶
26930
76015
5.5.14 14th Energy Level
Not Available
Rank: N/A (Overall) ▶
29196
86450
5.5.15 15th Energy Level
Not Available
Rank: N/A (Overall) ▶
41987
97510
5.5.16 16th Energy Level
Not Available
Rank: N/A (Overall) ▶
47206
109480
5.5.17 17th Energy Level
Not Available
Rank: N/A (Overall) ▶
52737
122200
5.5.18 18th Energy Level
Not Available
Rank: N/A (Overall) ▶
58570
134810
5.5.19 19th Energy Level
Not Available
Rank: N/A (Overall) ▶
64702
148700
5.5.20 20th Energy Level
Not Available
Rank: N/A (Overall) ▶
80400
171200
5.5.21 21st Energy Level
Not Available
Rank: N/A (Overall) ▶
87000
179100
5.5.22 22nd Energy Level
Not Available
Rank: N/A (Overall) ▶
93400
184900
5.5.23 23rd Energy Level
Not Available
Rank: N/A (Overall) ▶
98420
198800
5.5.24 24th Energy Level
Not Available
Rank: N/A (Overall) ▶
104400
195200
5.5.25 25th Energy Level
Not Available
Rank: N/A (Overall) ▶
121900
121900
5.5.26 26th Energy Level
Not Available
Rank: N/A (Overall) ▶
127700
127700
5.5.27 27th Energy Level
Not Available
Rank: N/A (Overall) ▶
133800
133800
5.5.28 28th Energy Level
Not Available
Rank: N/A (Overall) ▶
139800
139800
5.5.29 29th Energy Level
Not Available
Rank: N/A (Overall) ▶
148100
148100
5.5.30 30th Energy Level
Not Available
Rank: N/A (Overall) ▶
154500
154500
5.6 Electrochemical Equivalent
2.02 g/amp-hr
Rank: 29 (Overall) ▶
0.16812
8.3209
5.7 Electron Work Function
Not Available
Rank: N/A (Overall) ▶
2.14
5.65
5.8 Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
[Xe] 4f11 6s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
6.4.2 Number of Neutrons
6.4.3 Number of Electrons
6.5 Radius of an Atom
6.5.1 Atomic Radius
176.00 pm
Rank: 18 (Overall) ▶
112
265
6.5.2 Covalent Radius
192.00 pm
Rank: 17 (Overall) ▶
96
260
6.5.3 Van der Waals Radius
216.00 pm
Rank: 24 (Overall) ▶
139
348
6.6 Atomic Weight
164.93 amu
Rank: 44 (Overall) ▶
6.94
294
6.7 Atomic Volume
18.70 cm3/mol
Rank: 24 (Overall) ▶
1.39
71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
47.90 (-eV)
Rank: 31 (Overall) ▶
8
392.42
6.10 Lattice Constant
357.73 pm
Rank: 38 (Overall) ▶
228.58
891.25
6.11 Lattice Angles
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
1.57
Rank: 17 (Overall) ▶
1.567
1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
8.79 g/cm3
Rank: 46 (Overall) ▶
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
8.34 g/cm3
Rank: 26 (Overall) ▶
0.512
20
7.2 Tensile Strength
Not Available
Rank: N/A (Overall) ▶
2.5
11000
7.3 Viscosity
Not Available
Rank: N/A (Overall) ▶
0.001526
0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
0.00 (Pa)
Rank: 16 (Overall) ▶
2.47E-11
121
7.4.2 Vapor Pressure at 2000 K
Not Available
Rank: N/A (Overall) ▶
2.62E-10
774
7.5 Elasticity properties
7.5.1 Shear Modulus
26.30 GPa
Rank: 28 (Overall) ▶
1.3
222
7.5.2 Bulk Modulus
40.20 GPa
Rank: 32 (Overall) ▶
1.6
462
7.5.3 Young's Modulus
64.80 GPa
Rank: 31 (Overall) ▶
1.7
528
7.6 Poisson Ratio
0.23
Rank: 29 (Overall) ▶
0.032
0.47
7.7 Other Mechanical Properties
Ductile, Malleable, Sectile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.80
Rank: 35 (Overall) ▶
0.53
4500
8.1.2 Magnetic Ordering
Paramagnetic
8.1.3 Permeability
Not Available
Rank: N/A (Overall) ▶
1.25643E-06
0.0063
8.1.4 Susceptibility
Not Available
Rank: N/A (Overall) ▶
-0.000166
200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
8.2.2 Resistivity
814.00 nΩ·m
Rank: 4 (Overall) ▶
0.18
961
8.2.3 Electrical Conductivity
0.01 106/cm Ω
Rank: 52 (Overall) ▶
0.00666
0.63
8.2.4 Electron Affinity
50.00 kJ/mol
Rank: 21 (Overall) ▶
0
222.8
9 Thermal
9.1 Specific Heat
0.16 J/(kg K)
Rank: 35 (Overall) ▶
0.11
3.6
9.2 Molar Heat Capacity
27.15 J/mol·K
Rank: 19 (Overall) ▶
16.443
62.7
9.3 Thermal Conductivity
16.20 W/m·K
Rank: 52 (Overall) ▶
6.3
429
9.4 Critical Temperature
Not Available
Rank: N/A (Overall) ▶
26.3
3223
9.5 Thermal Expansion
11.20 µm/(m·K)
Rank: 35 (Overall) ▶
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
241.00 kJ/mol
Rank: 38 (Overall) ▶
7.32
799.1
9.6.2 Enthalpy of Fusion
11.76 kJ/mol
Rank: 29 (Overall) ▶
2.1
35.23
9.6.3 Enthalpy of Atomization
301.00 kJ/mol
Rank: 36 (Overall) ▶
61.5
837
9.7 Standard Molar Entropy
75.30 J/mol.K
Rank: 8 (Overall) ▶
9.5
198.1