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Nihonium vs Americium


Americium vs Nihonium


Periodic Table

Symbol
Nh   
Am   

Group Number
13   
5
Not Available   

Period Number
7   
7   

Block
p block   
f block   

Element Family
Probably Post-​Transition   
Actinide   

CAS Number
54084707   
6
7440359   
99+

Space Group Name
Not Available   
P63/mmc   

Space Group Number
194.00   
5
194.00   
5

Facts

Interesting Facts
Not Available   
  • Americium metal is produced by bombarding Plutonium with Neutrons.
  • Americium metal was discovered as a by-product while testing an atomic bomb (Manhattan Project).
  

Sources
Synthetically Produced   
Obtained By Bombarding Plutonium with Neutrons   

History
  
  

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

Discovery
In 2003   
In 1944   

Abundance
  
  

Uses

Uses & Benefits
  • Currently known uses of Ununtrium metal are limited to research purpose only.
  
  • Americium metal is used in smoke detection alarms.
  • In the future, this metal has a potential to be used in batteries of spacecrafts.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Research Purposes   
Alloys, Nuclear Research, Research Purposes   

Biological Properties
  
  

Toxicity
Unknown   
Toxic   

Present in Human Body
No   
No   

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

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

Physical Properties

Melting Point
430.00 °C   
99+
994.00 °C   
99+

Boiling Point
1,130.00 °C   
99+
2,607.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Unknown   
Silvery White   

Luster
Unknown Luster   
NA   

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
Nh   
Am   

Isotopes
  
  

Known Isotopes
7   
31
16   
23

Electronegativity
  
  

Pauling Electronegativity
Not Available   
1.30   
32

Allred Rochow Electronegativity
Not Available   
1.20   
27

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.70   
22

Ionization Energies
  
  

1st Energy Level
704.90 kJ/mol   
34
578.00 kJ/mol   
99+

2nd Energy Level
2,238.50 kJ/mol   
7
1,158.00 kJ/mol   
99+

3rd Energy Level
3,023.30 kJ/mol   
26
2,132.00 kJ/mol   
99+

4th Energy Level
4,351.50 kJ/mol   
29
3,493.00 kJ/mol   
99+

5th Energy Level
5,692.60 kJ/mol   
28
Not Available   

Electrochemical Equivalent
Not Available   
3.02 g/amp-hr   
17

Electron Work Function
Not Available   
Not Available   

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

Atomic Properties

Atomic Number
113   
5
95   
23

Electron Configuration
[Rn] 5f14 6d10 7s2 7p1   
[Rn] 5f7 7s2   

Crystal Structure
Not Known   
Double Hexagonal Close Packed (DHCP)   

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

Atom
  
  

Number of Protons
113   
5
95   
23

Number of Neutrons
150   
11
148   
12

Number of Electrons
113   
5
95   
23

Radius of an Atom
  
  

Atomic Radius
Not Available   
173.00 pm   
21

Covalent Radius
Not Available   
180.00 pm   
21

Van der Waals Radius
Not Available   
244.00 pm   
10

Atomic Weight
286.00 amu   
4
243.00 amu   
20

Atomic Volume
Not Available   
17.86 cm3/mol   
29

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  

Next Element
Flerovium
  
Curium
  

Valence Electron Potential
Not Available   
44.00 (-eV)   
40

Lattice Constant
Not Available   
346.81 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
16.00 g/cm3   
19
12.00 g/cm3   
30

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

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

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
Unknown   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
13.67   
15

Magnetic Ordering
Unknown   
Paramagnetic   

Electrical Properties
  
  

Resistivity
Not Available   
0.69 nΩ·m   
99+

Electrical Conductivity
Not Available   
0.02 106/cm Ω   
99+

Thermal Properties

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

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

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

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Enthalpy of Fusion
Not Available   
14.39 kJ/mol   
24

Enthalpy of Atomization
Not Available   
268.00 kJ/mol   
40

Standard Molar Entropy
Not Available   
Not Available   

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