Home

Transition Metals + -

Actinide Metals + -

Lanthanide Metals + -

Post-Transition Metals + -

Alkaline Earth Metals + -

Compare Metals

Dysprosium vs Hafnium

Dysprosium
Hafnium
Hafnium vs Dysprosium


Periodic Table
Symbol
Dy   
Hf   
Group Number
Not Available   
4   
14
Period Number
6   
6   
Block
f block   
d block   
Element Family
Lanthanide   
Transition Metal   
CAS Number
7429916   
99+
7440586   
30
Space Group Name
P63/mmc   
P63/mmc   
Space Group Number
194.00   
5
194.00   
5
Facts
Interesting Facts
  • Dysprosium acts stable in air at room temperature.
  • Dysprosium behaves very much like paramagnetic metal.
  
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
By-product Zirconium Refining   
History
  
  
Who Discovered
Lecoq de Boisbaudran   
Dirk Coster and George de Hevesy   
Discovery
In 1886   
In 1922   
Abundance
  
  
Abundance In Universe
2 * 10-7 %   
22
7 * 10-8 %   
25
Abundance In Sun
~0.0000002 %   
25
~0.0000001 %   
26
Abundance In Meteorites
0.00 %   
33
0.00 %   
37
Abundance In Earth's Crust
0.00 %   
28
0.00 %   
31
Abundance In Oceans
0.00 %   
35
0.00 %   
27
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 has an ability to absorb neutrons and hence it is used to make control rods in nuclear submarines. And this metal is also used in Plasma welding torches.
  • It alloys with iron, titanium and niobium are very useful.
  
Industrial Uses
NA   
Ammunition Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys, Nuclear Research   
Alloys, In Nuclear Reactors, Nuclear Research, Research Purposes   
Biological Properties
  
  
Toxicity
Mildly Toxic   
Toxic   
Present in Human Body
No   
No   
Physical Properties
Melting Point
1,407.00 °C   
32
2,150.00 °C   
10
Boiling Point
2,562.00 °C   
99+
5,400.00 °C   
5
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
5.50   
7
Brinell Hardness
500.00 MPa   
23
1,450.00 MPa   
6
Vickers Hardness
540.00 MPa   
20
1,520.00 MPa   
5
Speed of Sound
2,710.00 m/s   
33
3,010.00 m/s   
27
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   
Hf   
Isotopes
  
  
Known Isotopes
29   
10
32   
7
Electronegativity
  
  
Pauling Electronegativity
1.22   
38
1.30   
32
Allred Rochow Electronegativity
1.10   
30
1.23   
25
Allen Electronegativity
Not Available   
1.16   
37
Electropositivity
  
  
Pauling Electropositivity
2.78   
16
2.70   
22
Ionization Energies
  
  
1st Energy Level
573.00 kJ/mol   
99+
658.50 kJ/mol   
40
2nd Energy Level
1,130.00 kJ/mol   
99+
1,440.00 kJ/mol   
99+
3rd Energy Level
2,200.00 kJ/mol   
99+
2,250.00 kJ/mol   
99+
4th Energy Level
3,990.00 kJ/mol   
37
3,216.00 kJ/mol   
99+
Electrochemical Equivalent
2.02 g/amp-hr   
29
1.66 g/amp-hr   
99+
Electron Work Function
Not Available   
3.90 eV   
27
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
66   
99+
72   
99+
Electron Configuration
[Xe] 4f9 6s2   
[Xe] 4f14 5d2 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Dysprosium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
66   
99+
72   
99+
Number of Neutrons
96   
35
106   
29
Number of Electrons
66   
99+
72   
99+
Radius of an Atom
  
  
Atomic Radius
178.00 pm   
16
159.00 pm   
28
Covalent Radius
192.00 pm   
17
175.00 pm   
23
Van der Waals Radius
229.00 pm   
20
200.00 pm   
28
Atomic Weight
162.50 amu   
99+
178.49 amu   
39
Atomic Volume
19.00 cm3/mol   
23
13.60 cm3/mol   
38
Adjacent Atomic Numbers
  
  
Previous Element
Terbium
  
Lutetium
  
Next Element
Holmium
  
Tantalum
  
Valence Electron Potential
47.40 (-eV)   
32
81.00 (-eV)   
16
Lattice Constant
359.30 pm   
37
319.64 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.57   
15
1.58   
12
Mechanical Properties
Density
  
  
Density At Room Temperature
8.54 g/cm3   
99+
13.31 g/cm3   
26
Density When Liquid (at m.p.)
8.37 g/cm3   
25
12.00 g/cm3   
12
Tensile Strength
120.00 MPa   
15
445.00 MPa   
8
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available   
0.00 (Pa)   
24
Elasticity properties
  
  
Shear Modulus
24.70 GPa   
31
30.00 GPa   
23
Bulk Modulus
40.50 GPa   
31
110.00 GPa   
15
Young's Modulus
61.40 GPa   
33
78.00 GPa   
25
Poisson Ratio
0.25   
25
0.37   
7
Other Mechanical Properties
Sectile   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
8.55   
38
13.31   
18
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
926.00 nΩ·m   
2
331.00 nΩ·m   
14
Electrical Conductivity
0.01 106/cm Ω   
99+
0.03 106/cm Ω   
39
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)   
37
Molar Heat Capacity
27.70 J/mol·K   
14
25.73 J/mol·K   
36
Thermal Conductivity
10.70 W/m·K   
99+
23.00 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
9.90 µm/(m·K)   
40
5.90 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
230.00 kJ/mol   
39
661.10 kJ/mol   
5
Enthalpy of Fusion
11.05 kJ/mol   
32
25.10 kJ/mol   
8
Enthalpy of Atomization
301.00 kJ/mol   
36
703.00 kJ/mol   
5
Standard Molar Entropy
75.60 J/mol.K   
7
43.60 J/mol.K   
34
Periodic Table >>
<< All

Compare Lanthanide Series

Lanthanide Metals

Lanthanide Metals

» More Lanthanide Metals

Compare Lanthanide Series

» More Compare Lanthanide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!