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Holmium vs Hassium

Holmium
Hassium
Hassium vs Holmium


Periodic Table
Symbol
Ho  
Hs  
Group Number
Not Available  
8  
10
Period Number
6  
7  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7440600  
29
54037579  
11
Space Group Name
P63/mmc  
Not Available  
Space Group Number
194.00  
5
Not Available  
Facts
Interesting Facts
  • Holmium metal is very soft and malleable.
  • Holmium metal is well known for its corrosion resistivity.
  
  • Hassium metals rate of decay is very high.
  • Hassium metals 1st sample was synthesized through a nuclear reaction.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Synthetically Produced  
History
  
  
Who Discovered
Marc Delafontaine  
Gesellschaft für Schwerionenforschung  
Discovery
In 1878  
In 1984  
Abundance
  
  
Abundance In Universe
5 * 10-8 %  
27
Not Available  
Abundance In Meteorites
0.00 %  
99+
Not Available  
Abundance In Earth's Crust
0.00 %  
38
Not Available  
Abundance In Oceans
0.00 %  
99+
Not Available  
Uses
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.
  
  • Currently known uses of Hassium metal are limited to research purpose only.
  
Industrial Uses
NA  
NA  
Medical Uses
NA  
NA  
Other Uses
Alloys, Nuclear Research  
Research Purposes  
Biological Properties
  
  
Toxicity
Low Toxic  
Unknown  
Present in Human Body
No  
No  
In Blood
Not Available  
0.00 Blood/mg dm-3  
37
In Bone
Not Available  
0.00 p.p.m.  
36
Physical Properties
Melting Point
1,461.00 °C  
30
Not Available  
Boiling Point
2,600.00 °C  
99+
Not Available  
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silver  
Luster
Metallic  
NA  
Hardness
  
  
Brinell Hardness
746.00 MPa  
13
Not Available  
Vickers Hardness
481.00 MPa  
23
Not Available  
Speed of Sound
2,760.00 m/s  
30
Not Available  
Optical Properties
  
  
Allotropes
No  
No  
α Allotropes
Not Available  
Not Available  
β Allotropes
Not Available  
Not Available  
γ Allotropes
Not Available  
Not Available  
Chemical Properties
Chemical Formula
Ho  
Hs  
Isotopes
  
  
Known Isotopes
34  
5
7  
31
Electronegativity
  
  
Pauling Electronegativity
1.23  
37
Not Available  
Allred Rochow Electronegativity
1.10  
30
Not Available  
Electropositivity
  
  
Pauling Electropositivity
2.77  
17
Not Available  
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol  
99+
733.30 kJ/mol  
26
2nd Energy Level
1,140.00 kJ/mol  
99+
1,756.00 kJ/mol  
24
3rd Energy Level
2,204.00 kJ/mol  
99+
2,827.00 kJ/mol  
36
4th Energy Level
4,100.00 kJ/mol  
34
3,637.50 kJ/mol  
99+
5th Energy Level
Not Available  
4,940.00 kJ/mol  
34
6th Energy Level
Not Available  
6,175.10 kJ/mol  
23
7th Energy level
Not Available  
7,535.50 kJ/mol  
21
8th Energy Level
Not Available  
8,857.40 kJ/mol  
20
Electrochemical Equivalent
2.02 g/amp-hr  
29
Not Available  
Electron Work Function
Not Available  
Not Available  
Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic Properties
Atomic Number
67  
99+
108  
10
Electron Configuration
[Xe] 4f11 6s2  
[Rn] 5f14 6d6 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Holmium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
67  
99+
108  
10
Number of Neutrons
98  
34
158  
6
Number of Electrons
67  
99+
108  
10
Radius of an Atom
  
  
Atomic Radius
176.00 pm  
18
126.00 pm  
99+
Covalent Radius
192.00 pm  
17
134.00 pm  
99+
Van der Waals Radius
216.00 pm  
24
Not Available  
Atomic Weight
164.93 amu  
99+
269.00 amu  
9
Atomic Volume
18.70 cm3/mol  
24
Not Available  
Adjacent Atomic Numbers
  
  
Previous Element
Dysprosium
  
Bohrium
  
Next Element
Erbium
  
Meitnerium
  
Valence Electron Potential
47.90 (-eV)  
31
Not Available  
Lattice Constant
357.73 pm  
38
Not Available  
Lattice Angles
π/2, π/2, 2 π/3  
NA  
Lattice C/A Ratio
1.57  
17
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
8.79 g/cm3  
99+
40.70 g/cm3  
1
Density When Liquid (at m.p.)
8.34 g/cm3  
26
Not Available  
Tensile Strength
Not Available  
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
16
Not Available  
Elasticity properties
  
  
Shear Modulus
26.30 GPa  
28
Not Available  
Bulk Modulus
40.20 GPa  
32
Not Available  
Young's Modulus
64.80 GPa  
31
Not Available  
Poisson Ratio
0.23  
29
Not Available  
Other Mechanical Properties
Ductile, Malleable, Sectile  
Unknown  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
8.80  
35
Not Available  
Magnetic Ordering
Paramagnetic  
Unknown  
Electrical Properties
  
  
Electrical Property
Conductor  
Unknown  
Resistivity
814.00 nΩ·m  
4
Not Available  
Electrical Conductivity
0.01 106/cm Ω  
99+
Not Available  
Electron Affinity
50.00 kJ/mol  
21
Not Available  
Thermal Properties
Specific Heat
0.16 J/(kg K)  
35
Not Available  
Molar Heat Capacity
27.15 J/mol·K  
19
Not Available  
Thermal Conductivity
16.20 W/m·K  
99+
Not Available  
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
11.20 µm/(m·K)  
35
Not Available  
Enthalpy
  
  
Enthalpy of Vaporization
241.00 kJ/mol  
38
Not Available  
Enthalpy of Fusion
11.76 kJ/mol  
29
Not Available  
Enthalpy of Atomization
301.00 kJ/mol  
36
Not Available  
Standard Molar Entropy
75.30 J/mol.K  
8
Not Available  
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