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Americium Dysprosium Comparison


Dysprosium Americium comparison


Periodic Table

Symbol
Am   
Dy   

Group Number
Not Available   
Not Available   

Period Number
7   
6   

Block
f block   
f block   

Element Family
Actinide   
Lanthanide   

CAS Number
7440359   
99+
7429916   
99+

Space Group Name
P63/mmc   
P63/mmc   

Space Group Number
194.00   
5
194.00   
5

Facts

Interesting Facts
  • Americium metal is produced by bombarding Plutonium with Neutrons.
  • Americium metal was discovered as a by-product while testing an atomic bomb (Manhattan Project).
  
  • Dysprosium acts stable in air at room temperature.
  • Dysprosium behaves very much like paramagnetic metal.
  

Sources
Obtained By Bombarding Plutonium with Neutrons   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso   
Lecoq de Boisbaudran   

Discovery
In 1944   
In 1886   

Abundance
  
  

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

Abundance In Sun
~-9999 %   
~0.0000002 %   
25

Abundance In Meteorites
Not Available   
0.00 %   
33

Abundance In Earth's Crust
Not Available   
0.00 %   
28

Abundance In Oceans
Not Available   
0.00 %   
35

Uses

Uses & Benefits
  • Americium metal is used in smoke detection alarms.
  • In the future, this metal has a potential to be used in batteries of spacecrafts.
  
  • 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.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys, Nuclear Research   

Biological Properties
  
  

Toxicity
Toxic   
Mildly Toxic   

Present in Human Body
No   
No   

In Blood
0.00 Blood/mg dm-3   
37
Not Available   

In Bone
0.00 p.p.m.   
36
Not Available   

Physical Properties

Melting Point
994.00 °C   
99+
1,407.00 °C   
32

Boiling Point
2,607.00 °C   
99+
2,562.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
NA   
Metallic   

Hardness
  
  

Brinell Hardness
Not Available   
500.00 MPa   
23

Vickers Hardness
Not Available   
540.00 MPa   
20

Speed of Sound
Not Available   
2,710.00 m/s   
33

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
Am   
Dy   

Isotopes
  
  

Known Isotopes
16   
23
29   
10

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.22   
38

Allred Rochow Electronegativity
1.20   
27
1.10   
30

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.78   
16

Ionization Energies
  
  

1st Energy Level
578.00 kJ/mol   
99+
573.00 kJ/mol   
99+

2nd Energy Level
1,158.00 kJ/mol   
99+
1,130.00 kJ/mol   
99+

3rd Energy Level
2,132.00 kJ/mol   
99+
2,200.00 kJ/mol   
99+

4th Energy Level
3,493.00 kJ/mol   
99+
3,990.00 kJ/mol   
37

Electrochemical Equivalent
3.02 g/amp-hr   
17
2.02 g/amp-hr   
29

Electron Work Function
Not Available   
Not Available   

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

Atomic Properties

Atomic Number
95   
23
66   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Xe] 4f9 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
HCP-Crystal-Structure-of-Dysprosium.jpg#100   

Atom
  
  

Number of Protons
95   
23
66   
99+

Number of Neutrons
148   
12
96   
35

Number of Electrons
95   
23
66   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
178.00 pm   
16

Covalent Radius
180.00 pm   
21
192.00 pm   
17

Van der Waals Radius
244.00 pm   
10
229.00 pm   
20

Atomic Weight
243.00 amu   
20
162.50 amu   
99+

Atomic Volume
17.86 cm3/mol   
29
19.00 cm3/mol   
23

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  
Terbium
  

Next Element
Curium
  
Holmium
  

Valence Electron Potential
44.00 (-eV)   
40
47.40 (-eV)   
32

Lattice Constant
346.81 pm   
99+
359.30 pm   
37

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

Lattice C/A Ratio
Not Available   
1.57   
15

Mechanical Properties

Density
  
  

Density At Room Temperature
12.00 g/cm3   
30
8.54 g/cm3   
99+

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

Tensile Strength
Not Available   
120.00 MPa   
15

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
13
Not Available   

Elasticity properties
  
  

Shear Modulus
Not Available   
24.70 GPa   
31

Bulk Modulus
Not Available   
40.50 GPa   
31

Young's Modulus
Not Available   
61.40 GPa   
33

Poisson Ratio
Not Available   
0.25   
25

Other Mechanical Properties
NA   
Sectile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
13.67   
15
8.55   
38

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Unknown   
Conductor   

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

Electrical Conductivity
0.02 106/cm Ω   
99+
0.01 106/cm Ω   
99+

Electron Affinity
Not Available   
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.11 J/(kg K)   
99+
0.17 J/(kg K)   
34

Molar Heat Capacity
62.70 J/mol·K   
1
27.70 J/mol·K   
14

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

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
9.90 µm/(m·K)   
40

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
230.00 kJ/mol   
39

Enthalpy of Fusion
14.39 kJ/mol   
24
11.05 kJ/mol   
32

Enthalpy of Atomization
268.00 kJ/mol   
40
301.00 kJ/mol   
36

Standard Molar Entropy
Not Available   
75.60 J/mol.K   
7

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