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Americium Moscovium Comparison


Moscovium Americium comparison


Periodic Table

Symbol
Am   
Mc   

Group Number
Not Available   
15   
3

Period Number
7   
7   

Block
f block   
p block   

Element Family
Actinide   
Probably Post-​Transition   

CAS Number
7440359   
99+
54085642   
4

Space Group Name
P63/mmc   
Not Available   

Space Group Number
194.00   
5
Not Available   

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).
  
Not Available   

Sources
Obtained By Bombarding Plutonium with Neutrons   
Synthetically Produced   

History
  
  

Who Discovered
Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso   
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory   

Discovery
In 1944   
In 2003   

Abundance
  
  

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.
  
  • Currently known uses of Ununpentium metal are limited to research purpose only.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Alloys, Nuclear Research, Research Purposes   
Research Purposes   

Biological Properties
  
  

Toxicity
Toxic   
Unknown   

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+
400.00 °C   
99+

Boiling Point
2,607.00 °C   
99+
1,100.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Unknown   

Luster
NA   
Unknown Luster   

Hardness
  
  

Speed of Sound
Not Available   
Not Available   

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   
Mc   

Isotopes
  
  

Known Isotopes
16   
23
5   
32

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
Not Available   

Allred Rochow Electronegativity
1.20   
27
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
Not Available   

Ionization Energies
  
  

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

2nd Energy Level
1,158.00 kJ/mol   
99+
1,756.00 kJ/mol   
24

3rd Energy Level
2,132.00 kJ/mol   
99+
2,653.30 kJ/mol   
40

4th Energy Level
3,493.00 kJ/mol   
99+
4,679.50 kJ/mol   
24

5th Energy Level
Not Available   
5,721.60 kJ/mol   
27

Electrochemical Equivalent
3.02 g/amp-hr   
17
Not Available   

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Chemical Stability, Ionization   

Atomic Properties

Atomic Number
95   
23
115   
3

Electron Configuration
[Rn] 5f7 7s2   
[Rn] 5f14 6d10 7s2 7p3   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Not Known   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
Unknown-Crystal-Structure-of-Ununpentium.jpg#100   

Atom
  
  

Number of Protons
95   
23
115   
3

Number of Neutrons
148   
12
159   
5

Number of Electrons
95   
23
115   
3

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
Not Available   

Covalent Radius
180.00 pm   
21
Not Available   

Van der Waals Radius
244.00 pm   
10
Not Available   

Atomic Weight
243.00 amu   
20
289.00 amu   
3

Atomic Volume
17.86 cm3/mol   
29
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  
Flerovium
  

Next Element
Curium
  

Valence Electron Potential
44.00 (-eV)   
40
Not Available   

Lattice Constant
346.81 pm   
99+
Not Available   

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

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

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

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

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
Unknown   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
13.67   
15
Not Available   

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Resistivity
0.69 nΩ·m   
99+
Not Available   

Electrical Conductivity
0.02 106/cm Ω   
99+
Not Available   

Thermal Properties

Specific Heat
0.11 J/(kg K)   
99+
Not Available   

Molar Heat Capacity
62.70 J/mol·K   
1
Not Available   

Thermal Conductivity
10.00 W/m·K   
99+
Not Available   

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Enthalpy of Fusion
14.39 kJ/mol   
24
Not Available   

Enthalpy of Atomization
268.00 kJ/mol   
40
Not Available   

Standard Molar Entropy
Not Available   
Not Available   

Summary >>
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