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Holmium vs Copper

Holmium
Copper
Copper vs Holmium


Periodic Table
Symbol
Ho  
Cu  
Group Number
3  
15
11  
7
Period Number
6  
4  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7440600  
29
7440508  
37
Space Group Name
P63/mmc  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
  • Holmium metal is very soft and malleable.
  • Holmium metal is well known for its corrosion resistivity.
  
  • Copper rarely found in its pure form in nature.
  • Copper Sulfate is mostly used in agricultural poison and as an algicide in water purification system.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals  
History
  
  
Who Discovered
Marc Delafontaine  
-  
Discovery
In 1878  
In Middle East (9000 BCE)  
Abundance
  
  
Abundance In Universe
0.00 %  
28
0.00 %  
13
Abundance In Sun
-  
0.00 %  
12
Abundance In Meteorites
0.00 %  
99+
0.01 %  
13
Abundance In Earth's Crust
0.00 %  
38
0.01 %  
17
Abundance In Oceans
0.00 %  
99+
0.00 %  
8
Abundance In Humans
0.00 %  
24
0.00 %  
10
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.
  
  • It is use for coinage and bullion.
  • Most of copper element is used in manufacturing electrical and electronic equipments such as wirings and components. It is also used in construction and industrial machine.
  
Industrial Uses
-  
Chemical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research  
Alloys, Coinage, Jewellery  
Biological Properties
  
  
Toxicity
Low Toxic  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
1.01 Blood/mg dm-3  
8
In Bone
0.00 p.p.m.  
99+
26.00 p.p.m.  
12
Physical
Melting Point
1,461.00 °C  
30
1,084.62 °C  
40
Boiling Point
2,600.00 °C  
99+
2,562.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Copper  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
4.00  
11
3.00  
13
Brinell Hardness
746.00 MPa  
14
235.00 MPa  
99+
Vickers Hardness
481.00 MPa  
36
343.00 MPa  
99+
Speed of Sound
2,760.00 m/s  
99+
3,810.00 m/s  
26
Optical Properties
  
  
Refractive Index
1.67  
29
1.10  
99+
Reflectivity
67.00 %  
16
90.00 %  
4
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ho  
Cu  
Isotopes
  
  
Known Isotopes
34  
5
29  
10
Electronegativity
  
  
Pauling Electronegativity
1.23  
38
1.90  
12
Sanderson Electronegativity
1.23  
30
1.98  
11
Allred Rochow Electronegativity
1.10  
31
1.75  
4
Mulliken-Jaffe Electronegativity
1.23  
37
1.49  
27
Allen Electronegativity
1.23  
99+
1.85  
12
Electropositivity
  
  
Pauling Electropositivity
2.77  
17
2.10  
99+
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol  
99+
745.50 kJ/mol  
22
2nd Energy Level
1,140.00 kJ/mol  
99+
1,957.90 kJ/mol  
15
3rd Energy Level
2,204.00 kJ/mol  
99+
3,555.00 kJ/mol  
15
4th Energy Level
4,100.00 kJ/mol  
99+
5,536.00 kJ/mol  
21
5th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
17
6th Energy Level
5,810.00 kJ/mol  
99+
9,900.00 kJ/mol  
16
7th Energy level
5,810.00 kJ/mol  
99+
13,400.00 kJ/mol  
7
8th Energy Level
5,810.00 kJ/mol  
99+
16,000.00 kJ/mol  
9
9th Energy Level
6,500.00 kJ/mol  
39
19,200.00 kJ/mol  
9
10th Energy Level
6,500.00 kJ/mol  
99+
22,400.00 kJ/mol  
11
11th Energy Level
5,810.00 kJ/mol  
99+
25,600.00 kJ/mol  
13
12th Energy Level
5,810.00 kJ/mol  
99+
35,600.00 kJ/mol  
27
13th Energy Level
5,810.00 kJ/mol  
99+
38,700.00 kJ/mol  
6
14th Energy Level
5,810.00 kJ/mol  
40
42,000.00 kJ/mol  
7
15th Energy Level
58,100.00 kJ/mol  
99+
46,700.00 kJ/mol  
99+
16th Energy Level
581.00 kJ/mol  
99+
50,200.00 kJ/mol  
99+
17th Energy Level
581.00 kJ/mol  
99+
53,700.00 kJ/mol  
12
18th Energy Level
5,810.00 kJ/mol  
99+
61,100.00 kJ/mol  
10
19th Energy Level
581.00 kJ/mol  
99+
64,702.00 kJ/mol  
11
20th Energy Level
581.00 kJ/mol  
99+
163,700.00 kJ/mol  
2
21st Energy Level
581.00 kJ/mol  
99+
174,100.00 kJ/mol  
2
22nd Energy Level
581.00 kJ/mol  
99+
184,900.00 kJ/mol  
1
23rd Energy Level
5,810.00 kJ/mol  
20
198,800.00 kJ/mol  
1
24th Energy Level
581.00 kJ/mol  
99+
745.50 kJ/mol  
19
25th Energy Level
581.00 kJ/mol  
99+
745.50 kJ/mol  
19
26th Energy Level
581.00 kJ/mol  
99+
745.50 kJ/mol  
19
27th Energy Level
584.70 kJ/mol  
99+
745.50 kJ/mol  
18
28th Energy Level
581.00 kJ/mol  
99+
745.50 kJ/mol  
24
29th Energy Level
584.70 kJ/mol  
99+
745.50 kJ/mol  
25
30th Energy Level
581.00 kJ/mol  
99+
745.50 kJ/mol  
19
Electrochemical Equivalent
2.02 g/amp-hr  
33
1.19 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.65 eV  
16
Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Chemical Stability, Corrosion, Ionization, Solubility  
Atomic
Atomic Number
67  
99+
29  
99+
Electron Configuration
[Xe] 4f11 6s2  
[Ar] 3d10 4s1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Holmium.jpg#100  
FCC-Crystal-Structure-of-Copper.jpg#100  
Atom
  
  
Number of Protons
67  
99+
29  
99+
Number of Neutrons
98  
35
35  
99+
Number of Electrons
67  
99+
29  
99+
Radius of an Atom
  
  
Atomic Radius
176.00 pm  
20
128.00 pm  
99+
Covalent Radius
192.00 pm  
17
132.00 pm  
99+
Van der Waals Radius
216.00 pm  
30
140.00 pm  
99+
Atomic Weight
164.93 amu  
99+
63.55 amu  
99+
Atomic Volume
18.70 cm3/mol  
36
7.10 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Dysprosium
  
Nickel
  
Next Element
Erbium
  
Zinc
  
Valence Electron Potential
47.90 (-eV)  
32
34.00 (-eV)  
99+
Lattice Constant
357.73 pm  
99+
361.49 pm  
39
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.57  
40
1.28  
99+
Mechanical
Density
  
  
Density At Room Temperature
8.79 g/cm3  
99+
8.96 g/cm3  
99+
Density When Liquid (at m.p.)
8.34 g/cm3  
99+
8.02 g/cm3  
99+
Tensile Strength
270.00 MPa  
17
210.00 MPa  
19
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
17
1.53 (Pa)  
8
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
26.30 GPa  
35
48.00 GPa  
15
Bulk Modulus
40.20 GPa  
37
140.00 GPa  
12
Young's Modulus
64.80 GPa  
33
120.00 GPa  
19
Poisson Ratio
0.23  
29
0.34  
10
Other Mechanical Properties
Ductile, Malleable, Sectile  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
8.80  
99+
8.89  
99+
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
7
0.00 H/m  
19
Susceptibility
0.00  
11
0.00  
31
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
814.00 nΩ·m  
4
16.78 nΩ·m  
99+
Electrical Conductivity
0.01 106/cm Ω  
99+
0.60 106/cm Ω  
2
Electron Affinity
50.00 kJ/mol  
26
222.80 kJ/mol  
1
Thermal
Specific Heat
0.16 J/(kg K)  
36
0.38 J/(kg K)  
15
Molar Heat Capacity
27.15 J/mol·K  
25
24.44 J/mol·K  
99+
Thermal Conductivity
16.20 W/m·K  
99+
401.00 W/m·K  
2
Critical Temperature
1,747.00 K  
34
1,358.00 K  
99+
Thermal Expansion
11.20 µm/(m·K)  
99+
16.50 µm/(m·K)  
27
Enthalpy
  
  
Enthalpy of Vaporization
241.00 kJ/mol  
99+
283.70 kJ/mol  
99+
Enthalpy of Fusion
11.76 kJ/mol  
35
7.11 kJ/mol  
99+
Enthalpy of Atomization
301.00 kJ/mol  
99+
338.90 kJ/mol  
39
Standard Molar Entropy
75.30 J/mol.K  
8
33.20 J/mol.K  
99+
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