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Dysprosium vs Mercury


Mercury vs Dysprosium


Periodic Table

Symbol
Dy   
Hg   

Group Number
Not Available   
12   
6

Period Number
6   
6   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7429916   
99+
7439976   
99+

Space Group Name
P63/mmc   
R_ 3m   

Space Group Number
194.00   
5
166.00   
6

Facts

Interesting Facts
  • Dysprosium acts stable in air at room temperature.
  • Dysprosium behaves very much like paramagnetic metal.
  
  • At room temperature mercury is found in a liquid state.
  • A coin of pound or rupees floats in mercury.
  • Because of its low melting point and boiling point it is used in thermometers.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of Minerals   

History
  
  

Who Discovered
Lecoq de Boisbaudran   
Ancient Chinese and Indians   

Discovery
In 1886   
Before 2000 BCE   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
Not Available   

Abundance In Sun
~0.0000002 %   
25
~-9999 %   

Abundance In Meteorites
0.00 %   
33
Not Available   

Abundance In Earth's Crust
0.00 %   
28
0.05 %   
9

Abundance In Oceans
0.00 %   
35
Not Available   

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.
  
  • It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
  • It is manly used as a catalysts in chemical industry.
  

Industrial Uses
NA   
Electrical Industry, Electronic Industry   

Medical Uses
NA   
Dentistry   

Other Uses
Alloys, Nuclear Research   
Alloys, Mirror Manufacturing, Pharmaceutical Industry   

Biological Properties
  
  

Toxicity
Mildly Toxic   
Highly Toxic   

Present in Human Body
No   
Yes   

In Blood
Not Available   
0.01 Blood/mg dm-3   
23

In Bone
Not Available   
0.45 p.p.m.   
19

Physical Properties

Melting Point
1,407.00 °C   
32
Not Available   

Boiling Point
2,562.00 °C   
99+
356.58 °C   
99+

Appearance
  
  

Physical State
Solid   
Liquid   

Color
Silvery White   
Silver   

Luster
Metallic   
NA   

Hardness
  
  

Brinell Hardness
500.00 MPa   
23
Not Available   

Vickers Hardness
540.00 MPa   
20
Not Available   

Speed of Sound
2,710.00 m/s   
33
1,451.40 m/s   
99+

Optical Properties
  
  

Refractive Index
Not Available   
1.00   
3

Reflectivity
Not Available   
73.00 %   
8

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   
Hg   

Isotopes
  
  

Known Isotopes
29   
10
34   
5

Electronegativity
  
  

Pauling Electronegativity
1.22   
38
2.00   
7

Sanderson Electronegativity
Not Available   
2.20   
7

Allred Rochow Electronegativity
1.10   
30
1.44   
17

Mulliken-Jaffe Electronegativity
Not Available   
1.81   
9

Allen Electronegativity
Not Available   
1.44   
30

Electropositivity
  
  

Pauling Electropositivity
2.78   
16
2.00   
99+

Ionization Energies
  
  

1st Energy Level
573.00 kJ/mol   
99+
1,007.10 kJ/mol   
4

2nd Energy Level
1,130.00 kJ/mol   
99+
1,810.00 kJ/mol   
20

3rd Energy Level
2,200.00 kJ/mol   
99+
3,300.00 kJ/mol   
20

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

Electrochemical Equivalent
2.02 g/amp-hr   
29
3.74 g/amp-hr   
10

Electron Work Function
Not Available   
4.49 eV   
15

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

Atomic Properties

Atomic Number
66   
99+
80   
36

Electron Configuration
[Xe] 4f9 6s2   
[Xe] 4f14 5d10 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Rhombohedral (RHO)   

Crystal Lattice
HCP-Crystal-Structure-of-Dysprosium.jpg#100   
RHO-Crystal-Structure-of-Mercury.jpg#100   

Atom
  
  

Number of Protons
66   
99+
80   
36

Number of Neutrons
96   
35
121   
22

Number of Electrons
66   
99+
80   
36

Radius of an Atom
  
  

Atomic Radius
178.00 pm   
16
151.00 pm   
32

Covalent Radius
192.00 pm   
17
132.00 pm   
99+

Van der Waals Radius
229.00 pm   
20
155.00 pm   
99+

Atomic Weight
162.50 amu   
99+
200.59 amu   
32

Atomic Volume
19.00 cm3/mol   
23
14.82 cm3/mol   
35

Adjacent Atomic Numbers
  
  

Previous Element
Terbium
  
Gold
  

Next Element
Holmium
  
Thallium
  

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

Lattice Constant
359.30 pm   
37
300.50 pm   
99+

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

Lattice C/A Ratio
1.57   
15
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
8.54 g/cm3   
99+
13.53 g/cm3   
24

Density When Liquid (at m.p.)
8.37 g/cm3   
25
Not Available   

Tensile Strength
120.00 MPa   
15
Not Available   

Viscosity
Not Available   
0.00   
1

Vapor Pressure
  
  

Elasticity properties
  
  

Shear Modulus
24.70 GPa   
31
Not Available   

Bulk Modulus
40.50 GPa   
31
Not Available   

Young's Modulus
61.40 GPa   
33
Not Available   

Poisson Ratio
0.25   
25
Not Available   

Other Mechanical Properties
Sectile   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
8.55   
38
13.53   
16

Magnetic Ordering
Paramagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
926.00 nΩ·m   
2
961.00 nΩ·m   
1

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

Electron Affinity
50.00 kJ/mol   
21
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
0.17 J/(kg K)   
34
0.14 J/(kg K)   
38

Molar Heat Capacity
27.70 J/mol·K   
14
27.98 J/mol·K   
13

Thermal Conductivity
10.70 W/m·K   
99+
8.30 W/m·K   
99+

Critical Temperature
Not Available   
1,750.00 K   
6

Thermal Expansion
9.90 µm/(m·K)   
40
60.40 µm/(m·K)   
5

Enthalpy
  
  

Enthalpy of Vaporization
230.00 kJ/mol   
39
56.90 kJ/mol   
99+

Enthalpy of Fusion
11.05 kJ/mol   
32
2.29 kJ/mol   
99+

Enthalpy of Atomization
301.00 kJ/mol   
36
61.50 kJ/mol   
99+

Standard Molar Entropy
75.60 J/mol.K   
7
75.80 J/mol.K   
6

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