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Dysprosium Chromium Comparison


Chromium Dysprosium comparison


Periodic Table

Symbol
Dy   
Cr   

Group Number
Not Available   
6   
12

Period Number
6   
4   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7429916   
99+
7440473   
39

Space Group Name
P63/mmc   
Im_ 3m   

Space Group Number
194.00   
5
229.00   
1

Facts

Interesting Facts
  • Dysprosium acts stable in air at room temperature.
  • Dysprosium behaves very much like paramagnetic metal.
  
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  

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

History
  
  

Who Discovered
Lecoq de Boisbaudran   
Louis Nicolas Vauquelin   

Discovery
In 1886   
In Between 1797 - 1798   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
1.5 * 10-3 %   
7

Abundance In Sun
~0.0000002 %   
25
~0.002 %   
7

Abundance In Meteorites
0.00 %   
33
0.30 %   
7

Abundance In Earth's Crust
0.00 %   
28
0.01 %   
13

Abundance In Oceans
0.00 %   
35
0.00 %   
16

Abundance In Humans
Not Available   
0.00 %   
16

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 used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  

Industrial Uses
NA   
Automobile Industry, Chemical Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys, Nuclear Research   
Alloys   

Biological Properties
  
  

Toxicity
Mildly Toxic   
Highly Toxic   

Present in Human Body
No   
Yes   

In Blood
Not Available   
0.11 Blood/mg dm-3   
12

In Bone
Not Available   
0.33 p.p.m.   
21

Physical Properties

Melting Point
1,407.00 °C   
32
1,857.00 °C   
14

Boiling Point
2,562.00 °C   
99+
2,672.00 °C   
39

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silver   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
8.50   
1

Brinell Hardness
500.00 MPa   
23
687.00 MPa   
16

Vickers Hardness
540.00 MPa   
20
1,060.00 MPa   
10

Speed of Sound
2,710.00 m/s   
33
5,940.00 m/s   
5

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
Dy   
Cr   

Isotopes
  
  

Known Isotopes
29   
10
21   
18

Electronegativity
  
  

Pauling Electronegativity
1.22   
38
1.66   
18

Sanderson Electronegativity
Not Available   
1.66   
14

Allred Rochow Electronegativity
1.10   
30
1.56   
10

Allen Electronegativity
Not Available   
1.65   
19

Electropositivity
  
  

Pauling Electropositivity
2.78   
16
2.34   
36

Ionization Energies
  
  

1st Energy Level
573.00 kJ/mol   
99+
26,130.00 kJ/mol   
1

2nd Energy Level
1,130.00 kJ/mol   
99+
28,750.00 kJ/mol   
1

3rd Energy Level
2,200.00 kJ/mol   
99+
34,230.00 kJ/mol   
1

4th Energy Level
3,990.00 kJ/mol   
37
37,066.00 kJ/mol   
1

5th Energy Level
Not Available   
97,510.00 kJ/mol   
1

6th Energy Level
Not Available   
105,800.00 kJ/mol   
1

7th Energy level
Not Available   
114,300.00 kJ/mol   
1

8th Energy Level
Not Available   
125,300.00 kJ/mol   
1

9th Energy Level
Not Available   
134,700.00 kJ/mol   
1

10th Energy Level
Not Available   
144,300.00 kJ/mol   
1

11th Energy Level
Not Available   
26,130.00 kJ/mol   
12

12th Energy Level
Not Available   
28,750.00 kJ/mol   
13

13th Energy Level
Not Available   
34,230.00 kJ/mol   
10

14th Energy Level
Not Available   
37,066.00 kJ/mol   
12

15th Energy Level
Not Available   
97,510.00 kJ/mol   
1

16th Energy Level
Not Available   
105,800.00 kJ/mol   
2

17th Energy Level
Not Available   
114,300.00 kJ/mol   
3

18th Energy Level
Not Available   
125,300.00 kJ/mol   
4

19th Energy Level
Not Available   
134,700.00 kJ/mol   
5

20th Energy Level
Not Available   
144,300.00 kJ/mol   
7

21st Energy Level
Not Available   
157,700.00 kJ/mol   
7

22nd Energy Level
Not Available   
166,090.00 kJ/mol   
6

Electrochemical Equivalent
2.02 g/amp-hr   
29
0.32 g/amp-hr   
99+

Electron Work Function
Not Available   
4.50 eV   
14

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

Atomic Properties

Atomic Number
66   
99+
24   
99+

Electron Configuration
[Xe] 4f9 6s2   
[Ar] 3d5 4s1   

Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Dysprosium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
66   
99+
24   
99+

Number of Neutrons
96   
35
28   
99+

Number of Electrons
66   
99+
24   
99+

Radius of an Atom
  
  

Atomic Radius
178.00 pm   
16
128.00 pm   
99+

Covalent Radius
192.00 pm   
17
139.00 pm   
99+

Van der Waals Radius
229.00 pm   
20
200.00 pm   
28

Atomic Weight
162.50 amu   
99+
52.00 amu   
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Terbium
  
Vanadium
  

Next Element
Holmium
  
Manganese
  

Valence Electron Potential
47.40 (-eV)   
32
170.00 (-eV)   
4

Lattice Constant
359.30 pm   
37
291.00 pm   
99+

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+
7.19 g/cm3   
99+

Density When Liquid (at m.p.)
8.37 g/cm3   
25
6.30 g/cm3   
40

Tensile Strength
120.00 MPa   
15
689.00 MPa   
7

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
24

Vapor Pressure at 2000 K
Not Available   
774.00 (Pa)   
1

Elasticity properties
  
  

Shear Modulus
24.70 GPa   
31
115.00 GPa   
9

Bulk Modulus
40.50 GPa   
31
160.00 GPa   
11

Young's Modulus
61.40 GPa   
33
279.00 GPa   
8

Poisson Ratio
0.25   
25
0.21   
32

Other Mechanical Properties
Sectile   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
8.55   
38
7.19   
99+

Magnetic Ordering
Paramagnetic   
Antiferromagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
NA   

Resistivity
926.00 nΩ·m   
2
125.00 nΩ·m   
27

Electrical Conductivity
0.01 106/cm Ω   
99+
0.08 106/cm Ω   
25

Electron Affinity
50.00 kJ/mol   
21
64.30 kJ/mol   
15

Thermal Properties

Specific Heat
0.17 J/(kg K)   
34
0.45 J/(kg K)   
12

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

Thermal Conductivity
10.70 W/m·K   
99+
93.90 W/m·K   
17

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
9.90 µm/(m·K)   
40
4.90 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
230.00 kJ/mol   
39
348.80 kJ/mol   
24

Enthalpy of Fusion
11.05 kJ/mol   
32
15.31 kJ/mol   
20

Enthalpy of Atomization
301.00 kJ/mol   
36
397.50 kJ/mol   
21

Standard Molar Entropy
75.60 J/mol.K   
7
23.80 J/mol.K   
99+

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