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Dysprosium vs Silver


Silver vs Dysprosium


Periodic Table

Symbol
Dy   
Ag   

Group Number
Not Available   
11   
7

Period Number
6   
5   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7429916   
99+
7440224   
99+

Space Group Name
P63/mmc   
Fm_ 3m   

Space Group Number
194.00   
5
225.00   
2

Facts

Interesting Facts
  • Dysprosium acts stable in air at room temperature.
  • Dysprosium behaves very much like paramagnetic metal.
  
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Found in Minerals, Ores of metals   

History
  
  

Who Discovered
Lecoq de Boisbaudran   
Unknown   

Discovery
In 1886   
Before 5000 BC   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
6 * 10-8 %   
26

Abundance In Sun
~0.0000002 %   
25
~0.0000001 %   
26

Abundance In Meteorites
0.00 %   
33
0.00 %   
38

Abundance In Earth's Crust
0.00 %   
28
0.00 %   
99+

Abundance In Oceans
0.00 %   
35
0.00 %   
19

Uses

Uses & Benefits
  • Dysprosium metal is highly reactive due to which it pure form is not as usual as its alloy.
  • Thi metals alloy is used in magnate as it is resistance to high temperature.
  
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  

Industrial Uses
NA   
Chemical Industry, Clothing Industry, Electrical Industry   

Medical Uses
NA   
Dentistry, Pharmaceutical Industry   

Other Uses
Alloys, Nuclear Research   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Mildly Toxic   
Non Toxic   

Present in Human Body
No   
Yes   

In Blood
Not Available   
0.00 Blood/mg dm-3   
29

In Bone
Not Available   
0.44 p.p.m.   
20

Physical Properties

Melting Point
1,407.00 °C   
32
961.93 °C   
99+

Boiling Point
2,562.00 °C   
99+
2,212.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
2.50   
14

Brinell Hardness
500.00 MPa   
23
251.00 MPa   
37

Vickers Hardness
540.00 MPa   
20
229.00 MPa   
30

Speed of Sound
2,710.00 m/s   
33
2,680.00 m/s   
34

Optical Properties
  
  

Reflectivity
Not Available   
97.00 %   
1

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
Dy   
Ag   

Isotopes
  
  

Known Isotopes
29   
10
36   
3

Electronegativity
  
  

Pauling Electronegativity
1.22   
38
1.93   
9

Sanderson Electronegativity
Not Available   
1.83   
11

Allred Rochow Electronegativity
1.10   
30
1.42   
18

Mulliken-Jaffe Electronegativity
Not Available   
1.47   
15

Allen Electronegativity
Not Available   
1.87   
7

Electropositivity
  
  

Pauling Electropositivity
2.78   
16
2.07   
99+

Ionization Energies
  
  

1st Energy Level
573.00 kJ/mol   
99+
731.00 kJ/mol   
27

2nd Energy Level
1,130.00 kJ/mol   
99+
2,070.00 kJ/mol   
11

3rd Energy Level
2,200.00 kJ/mol   
99+
3,361.00 kJ/mol   
19

4th Energy Level
3,990.00 kJ/mol   
37
Not Available   

Electrochemical Equivalent
2.02 g/amp-hr   
29
4.02 g/amp-hr   
7

Electron Work Function
Not Available   
4.26 eV   
20

Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Chemical Stability, Ionization, Solubility   

Atomic Properties

Atomic Number
66   
99+
47   
99+

Electron Configuration
[Xe] 4f9 6s2   
[Kr] 4d10 5s1   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Dysprosium.jpg#100   
FCC-Crystal-Structure-of-Silver.jpg#100   

Atom
  
  

Number of Protons
66   
99+
47   
99+

Number of Neutrons
96   
35
61   
99+

Number of Electrons
66   
99+
47   
99+

Radius of an Atom
  
  

Atomic Radius
178.00 pm   
16
144.00 pm   
36

Covalent Radius
192.00 pm   
17
145.00 pm   
39

Van der Waals Radius
229.00 pm   
20
172.00 pm   
38

Atomic Weight
162.50 amu   
99+
107.87 amu   
99+

Atomic Volume
19.00 cm3/mol   
23
10.30 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Terbium
  
Palladium
  

Next Element
Holmium
  
Cadmium
  

Valence Electron Potential
47.40 (-eV)   
32
11.40 (-eV)   
99+

Lattice Constant
359.30 pm   
37
408.53 pm   
20

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.57   
15
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
8.54 g/cm3   
99+
10.49 g/cm3   
35

Density When Liquid (at m.p.)
8.37 g/cm3   
25
9.32 g/cm3   
21

Tensile Strength
120.00 MPa   
15
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
14

Elasticity properties
  
  

Shear Modulus
24.70 GPa   
31
30.00 GPa   
23

Bulk Modulus
40.50 GPa   
31
100.00 GPa   
16

Young's Modulus
61.40 GPa   
33
83.00 GPa   
23

Poisson Ratio
0.25   
25
0.37   
7

Other Mechanical Properties
Sectile   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
8.55   
38
10.50   
26

Magnetic Ordering
Paramagnetic   
Diamagnetic   

Susceptibility
Not Available   
0.00   
5

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
926.00 nΩ·m   
2
15.87 nΩ·m   
99+

Electrical Conductivity
0.01 106/cm Ω   
99+
0.63 106/cm Ω   
1

Electron Affinity
50.00 kJ/mol   
21
125.60 kJ/mol   
5

Thermal Properties

Specific Heat
0.17 J/(kg K)   
34
0.24 J/(kg K)   
25

Molar Heat Capacity
27.70 J/mol·K   
14
25.35 J/mol·K   
99+

Thermal Conductivity
10.70 W/m·K   
99+
429.00 W/m·K   
1

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
9.90 µm/(m·K)   
40
18.90 µm/(m·K)   
23

Enthalpy
  
  

Enthalpy of Vaporization
230.00 kJ/mol   
39
255.10 kJ/mol   
37

Enthalpy of Fusion
11.05 kJ/mol   
32
11.30 kJ/mol   
31

Enthalpy of Atomization
301.00 kJ/mol   
36
284.50 kJ/mol   
37

Standard Molar Entropy
75.60 J/mol.K   
7
42.60 J/mol.K   
35

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