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Dysprosium vs Barium

Dysprosium
Barium
Barium vs Dysprosium


Periodic Table
Symbol
Dy  
Ba  
Group Number
Not Available  
2  
16
Period Number
6  
6  
Block
f block  
s block  
Element Family
Lanthanide  
Alkaline Earth  
CAS Number
7429916  
99+
7440393  
99+
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.
  
  • Barium oxidizes very easily in the air.
  • All toxic compounds of Barium can easily dissolve in water.
  • Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Lecoq de Boisbaudran  
Carl Wilhelm Scheele  
Discovery
In 1886  
In 1772  
Abundance
  
  
Abundance In Universe
2 * 10-7 %  
22
1 * 10-6 %  
16
Abundance In Sun
~0.0000002 %  
25
~0.000001 %  
18
Abundance In Meteorites
0.00 %  
33
0.00 %  
20
Abundance In Earth's Crust
0.00 %  
28
0.03 %  
11
Abundance In Oceans
0.00 %  
35
0.00 %  
8
Abundance In Humans
Not Available  
0.00 %  
12
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 sued in chemical paint manufacturing and glass manufacturing.
  • Compounds of this metal are toxic; but still the barium sulfate is insoluble and given to patients suffering from digestive disorder.
  
Industrial Uses
NA  
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
NA  
NA  
Other Uses
Alloys, Nuclear Research  
Alloys  
Biological Properties
  
  
Toxicity
Mildly Toxic  
Low Toxic  
Present in Human Body
No  
Yes  
In Blood
Not Available  
0.07 Blood/mg dm-3  
15
In Bone
Not Available  
70.00 p.p.m.  
9
Physical Properties
Melting Point
1,407.00 °C  
32
725.00 °C  
99+
Boiling Point
2,562.00 °C  
99+
1,140.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
Metallic  
NA  
Hardness
  
  
Mohs Hardness
Not Available  
1.25  
19
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
1,620.00 m/s  
99+
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  
Ba  
Isotopes
  
  
Known Isotopes
29  
10
37  
2
Electronegativity
  
  
Pauling Electronegativity
1.22  
38
0.89  
99+
Sanderson Electronegativity
Not Available  
0.68  
28
Allred Rochow Electronegativity
1.10  
30
0.97  
38
Mulliken-Jaffe Electronegativity
Not Available  
0.88  
22
Allen Electronegativity
Not Available  
0.88  
99+
Electropositivity
  
  
Pauling Electropositivity
2.78  
16
3.11  
4
Ionization Energies
  
  
1st Energy Level
573.00 kJ/mol  
99+
502.90 kJ/mol  
99+
2nd Energy Level
1,130.00 kJ/mol  
99+
965.20 kJ/mol  
99+
3rd Energy Level
2,200.00 kJ/mol  
99+
3,600.00 kJ/mol  
14
4th Energy Level
3,990.00 kJ/mol  
37
Not Available  
Electrochemical Equivalent
2.02 g/amp-hr  
29
2.56 g/amp-hr  
20
Electron Work Function
Not Available  
2.70 eV  
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic Properties
Atomic Number
66  
99+
56  
99+
Electron Configuration
[Xe] 4f9 6s2  
[Xe] 6s2  
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+
56  
99+
Number of Neutrons
96  
35
81  
99+
Number of Electrons
66  
99+
56  
99+
Radius of an Atom
  
  
Atomic Radius
178.00 pm  
16
222.00 pm  
4
Covalent Radius
192.00 pm  
17
215.00 pm  
5
Van der Waals Radius
229.00 pm  
20
268.00 pm  
6
Atomic Weight
162.50 amu  
99+
137.33 amu  
99+
Atomic Volume
19.00 cm3/mol  
23
39.24 cm3/mol  
5
Adjacent Atomic Numbers
  
  
Previous Element
Terbium
  
Cesium
  
Next Element
Holmium
  
Lanthanum
  
Valence Electron Potential
47.40 (-eV)  
32
21.30 (-eV)  
99+
Lattice Constant
359.30 pm  
37
502.80 pm  
15
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+
3.51 g/cm3  
99+
Density When Liquid (at m.p.)
8.37 g/cm3  
25
3.34 g/cm3  
99+
Tensile Strength
120.00 MPa  
15
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available  
7.11 (Pa)  
6
Elasticity properties
  
  
Shear Modulus
24.70 GPa  
31
4.90 GPa  
99+
Bulk Modulus
40.50 GPa  
31
9.60 GPa  
99+
Young's Modulus
61.40 GPa  
33
13.00 GPa  
99+
Poisson Ratio
0.25  
25
Not Available  
Other Mechanical Properties
Sectile  
NA  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
8.55  
38
3.62  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
Conductor  
Superconductor  
Resistivity
926.00 nΩ·m  
2
332.00 nΩ·m  
13
Electrical Conductivity
0.01 106/cm Ω  
99+
0.03 106/cm Ω  
40
Electron Affinity
50.00 kJ/mol  
21
13.95 kJ/mol  
36
Thermal Properties
Specific Heat
0.17 J/(kg K)  
34
0.20 J/(kg K)  
30
Molar Heat Capacity
27.70 J/mol·K  
14
28.07 J/mol·K  
12
Thermal Conductivity
10.70 W/m·K  
99+
18.40 W/m·K  
99+
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
9.90 µm/(m·K)  
40
20.60 µm/(m·K)  
22
Enthalpy
  
  
Enthalpy of Vaporization
230.00 kJ/mol  
39
140.00 kJ/mol  
99+
Enthalpy of Fusion
11.05 kJ/mol  
32
7.66 kJ/mol  
99+
Enthalpy of Atomization
301.00 kJ/mol  
36
175.70 kJ/mol  
99+
Standard Molar Entropy
75.60 J/mol.K  
7
62.50 J/mol.K  
20
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