Nihonium vs Holmium
Periodic Table
Symbol
Nh
Ho
Group Number
13
5
Not Available
Period Number
7
6
Block
p block
f block
Element Family
Probably Post-Transition
Lanthanide
CAS Number
54084707
6
7440600
29
Space Group Name
Not Available
P63/mmc
Space Group Number
194.00
5
194.00
5
Facts
Interesting Facts
Not Available
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
Sources
Synthetically Produced
Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
Marc Delafontaine
Discovery
In 2003
In 1878
Abundance
Abundance In Universe
Not Available
5 * 10-8 %
27
Abundance In Meteorites
Not Available
0.00 %
99+
Abundance In Earth's Crust
Not Available
0.00 %
38
Abundance In Oceans
Not Available
0.00 %
99+
Uses
Uses & Benefits
- Currently known uses of Ununtrium 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.
Industrial Uses
NA
NA
Medical Uses
NA
NA
Other Uses
Research Purposes
Alloys, Nuclear Research
Biological Properties
Toxicity
Unknown
Low Toxic
Present in Human Body
No
No
Physical Properties
Melting Point
430.00 °C
99+
1,461.00 °C
30
Boiling Point
1,130.00 °C
99+
2,600.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Unknown
Silvery White
Luster
Unknown Luster
Metallic
Hardness
Brinell Hardness
Not Available
746.00 MPa
13
Vickers Hardness
Not Available
481.00 MPa
23
Speed of Sound
Not Available
2,760.00 m/s
30
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
Nh
Ho
Isotopes
Known Isotopes
7
31
34
5
Electronegativity
Pauling Electronegativity
Not Available
1.23
37
Allred Rochow Electronegativity
Not Available
1.10
30
Electropositivity
Pauling Electropositivity
Not Available
2.77
17
Ionization Energies
1st Energy Level
704.90 kJ/mol
34
581.00 kJ/mol
99+
2nd Energy Level
2,238.50 kJ/mol
7
1,140.00 kJ/mol
99+
3rd Energy Level
3,023.30 kJ/mol
26
2,204.00 kJ/mol
99+
4th Energy Level
4,351.50 kJ/mol
29
4,100.00 kJ/mol
34
5th Energy Level
5,692.60 kJ/mol
28
Not Available
Electrochemical Equivalent
Not Available
2.02 g/amp-hr
29
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Chemical Stability, Ionization
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Atomic Properties
Atomic Number
113
5
67
99+
Electron Configuration
[Rn] 5f14 6d10 7s2 7p1
[Xe] 4f11 6s2
Crystal Structure
Not Known
Hexagonal Close Packed (HCP)
Crystal Lattice
Unknown-Crystal-Structure-of-Ununtrium.jpg#100
HCP-Crystal-Structure-of-Holmium.jpg#100
Atom
Number of Protons
113
5
67
99+
Number of Neutrons
150
11
98
34
Number of Electrons
113
5
67
99+
Radius of an Atom
Atomic Radius
Not Available
176.00 pm
18
Covalent Radius
Not Available
192.00 pm
17
Van der Waals Radius
Not Available
216.00 pm
24
Atomic Weight
286.00 amu
4
164.93 amu
99+
Atomic Volume
Not Available
18.70 cm3/mol
24
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
47.90 (-eV)
31
Lattice Constant
Not Available
357.73 pm
38
Lattice Angles
NA
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
1.57
17
Mechanical Properties
Density
Density At Room Temperature
16.00 g/cm3
19
8.79 g/cm3
99+
Density When Liquid (at m.p.)
Not Available
8.34 g/cm3
26
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.00 (Pa)
16
Elasticity properties
Shear Modulus
Not Available
26.30 GPa
28
Bulk Modulus
Not Available
40.20 GPa
32
Young's Modulus
Not Available
64.80 GPa
31
Poisson Ratio
Not Available
0.23
29
Other Mechanical Properties
Unknown
Ductile, Malleable, Sectile
Magnetic Properties
Magnetic Characteristics
Specific Gravity
Not Available
8.80
35
Magnetic Ordering
Unknown
Paramagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
814.00 nΩ·m
4
Electrical Conductivity
Not Available
0.01 106/cm Ω
99+
Electron Affinity
Not Available
50.00 kJ/mol
21
Thermal Properties
Specific Heat
Not Available
0.16 J/(kg K)
35
Molar Heat Capacity
Not Available
27.15 J/mol·K
19
Thermal Conductivity
Not Available
16.20 W/m·K
99+
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
11.20 µm/(m·K)
35
Enthalpy
Enthalpy of Vaporization
Not Available
241.00 kJ/mol
38
Enthalpy of Fusion
Not Available
11.76 kJ/mol
29
Enthalpy of Atomization
Not Available
301.00 kJ/mol
36
Standard Molar Entropy
Not Available
75.30 J/mol.K
8
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