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Neptunium Livermorium Comparison


Livermorium Neptunium comparison


Periodic Table

Symbol
Np   
Lv   

Group Number
Not Available   
16   
2

Period Number
7   
7   

Block
f block   
p block   

Element Family
Actinide   
Probably Post-​Transition   

CAS Number
7439998   
99+
54100719   
3

Space Group Name
Pnma   
Not Available   

Space Group Number
62.00   
11
Not Available   

Facts

Interesting Facts
Not Available   
Not Available   

Sources
Made by Bombarding Uranium with Neutrons, Ores of metals   
Synthetically Produced   

History
  
  

Who Discovered
Edwin McMillan and Philip H. Abelson   
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory   

Discovery
In 1940   
In 2000   

Abundance
  
  

Uses

Uses & Benefits
  • Currently known uses of Neptunium metal are limited to research purpose only.
  • Neptunium’s isotope neptunium-237 is used as a neutron detectors.
  
  • Currently known uses of Livermorium 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
640.00 °C   
99+
Not Available   

Boiling Point
3,902.00 °C   
13
Not Available   

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Unknown   

Luster
Metallic   
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
Np   
Lv   

Isotopes
  
  

Known Isotopes
20   
19
5   
32

Electronegativity
  
  

Pauling Electronegativity
1.36   
29
Not Available   

Allred Rochow Electronegativity
1.22   
26
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.64   
25
Not Available   

Ionization Energies
  
  

1st Energy Level
604.50 kJ/mol   
99+
723.60 kJ/mol   
28

2nd Energy Level
1,128.00 kJ/mol   
99+
1,331.50 kJ/mol   
99+

3rd Energy Level
1,997.00 kJ/mol   
99+
2,846.30 kJ/mol   
34

4th Energy Level
3,242.00 kJ/mol   
99+
3,811.20 kJ/mol   
99+

5th Energy Level
Not Available   
6,078.60 kJ/mol   
24

Electrochemical Equivalent
1.77 g/amp-hr   
39
Not Available   

Electron Work Function
Not Available   
Not Available   

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

Atomic Properties

Atomic Number
93   
25
116   
2

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Rn] 5f14 6d10 7s2 7p4   

Crystal Structure
Orthorhombic (ORTH)   
Not Known   

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
Unknown-Crystal-Structure-of-Livermorium.jpg#100   

Atom
  
  

Number of Protons
93   
25
116   
2

Number of Neutrons
144   
14
160   
4

Number of Electrons
93   
25
116   
2

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
Not Available   

Covalent Radius
190.00 pm   
18
Not Available   

Van der Waals Radius
221.00 pm   
22
Not Available   

Atomic Weight
237.00 amu   
22
293.00 amu   
2

Atomic Volume
11.62 cm3/mol   
99+
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  
Moscovium
  

Next Element
Plutonium
  
No Next Element   

Valence Electron Potential
96.00 (-eV)   
9
Not Available   

Lattice Constant
666.30 pm   
3
Not Available   

Lattice Angles
π/2, π/2, π/2   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
19.38 g/cm3   
14
Not Available   

Tensile Strength
125.00 MPa   
14
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
0.11 (Pa)   
17
Not Available   

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
Ductile   
Unknown   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
20.25   
6
Not Available   

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Unknown   

Resistivity
1.22 nΩ·m   
99+
Not Available   

Electrical Conductivity
0.01 106/cm Ω   
99+
Not Available   

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
Not Available   

Molar Heat Capacity
29.46 J/mol·K   
8
Not Available   

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

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Enthalpy of Fusion
3.20 kJ/mol   
99+
Not Available   

Standard Molar Entropy
Not Available   
Not Available   

Summary >>
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