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Neptunium Vanadium Comparison

Neptunium
Vanadium
Vanadium Neptunium comparison


Periodic Table
Symbol
Np   
V   
Group Number
Not Available   
5   
13
Period Number
7   
4   
Block
f block   
d block   
Element Family
Actinide   
Transition Metal   
CAS Number
7439998   
99+
7440622   
27
Space Group Name
Pnma   
Im_ 3m   
Space Group Number
62.00   
11
229.00   
1
Facts
Interesting Facts
Not Available   
  • Vanadium is a highly reactive metal, hence it is not found free in nature.
  • Vanadium can be found in almost 65 different types of minerals.
  
Sources
Made by Bombarding Uranium with Neutrons, Ores of metals   
Found As a By-product, Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Edwin McMillan and Philip H. Abelson   
Andrés Manuel del Río   
Discovery
In 1940   
In 1801   
Abundance
  
  
Abundance In Universe
Not Available   
1 * 10-4 %   
10
Abundance In Sun
~-9999 %   
~0.00004 %   
13
Abundance In Meteorites
Not Available   
0.01 %   
14
Abundance In Earth's Crust
Not Available   
0.02 %   
12
Abundance In Oceans
Not Available   
0.00 %   
14
Abundance In Humans
Not Available   
0.00 %   
16
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.
  
  • Its ally with steel is used very tough and hence it is used in armor plates, axles, piston rods, tools and crankshafts.
  • Its oxide is used as pigments for glass and ceramics.
  
Industrial Uses
NA   
Aerospace Industry, Automobile Industry, Chemical Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Toxic   
Toxic   
Present in Human Body
No   
Yes   
In Blood
0.00 Blood/mg dm-3   
37
0.00 Blood/mg dm-3   
36
In Bone
0.00 p.p.m.   
36
0.00 p.p.m.   
31
Physical Properties
Melting Point
640.00 °C   
99+
1,890.00 °C   
13
Boiling Point
3,902.00 °C   
13
3,380.00 °C   
20
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Blue-Silver Grey   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
6.70   
4
Brinell Hardness
Not Available   
600.00 MPa   
20
Vickers Hardness
Not Available   
628.00 MPa   
17
Speed of Sound
Not Available   
4,560.00 m/s   
17
Optical Properties
  
  
Reflectivity
Not Available   
61.00 %   
14
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   
V   
Isotopes
  
  
Known Isotopes
20   
19
22   
17
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
1.63   
20
Sanderson Electronegativity
Not Available   
1.39   
17
Allred Rochow Electronegativity
1.22   
26
1.45   
16
Allen Electronegativity
Not Available   
1.53   
26
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
2.37   
34
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
650.90 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,414.00 kJ/mol   
99+
3rd Energy Level
1,997.00 kJ/mol   
99+
2,830.00 kJ/mol   
35
4th Energy Level
3,242.00 kJ/mol   
99+
4,507.00 kJ/mol   
25
5th Energy Level
Not Available   
6,298.70 kJ/mol   
23
6th Energy Level
Not Available   
12,363.00 kJ/mol   
5
7th Energy level
Not Available   
14,530.00 kJ/mol   
5
8th Energy Level
Not Available   
16,730.00 kJ/mol   
7
9th Energy Level
Not Available   
19,860.00 kJ/mol   
7
10th Energy Level
Not Available   
22,240.00 kJ/mol   
12
11th Energy Level
Not Available   
24,670.00 kJ/mol   
15
12th Energy Level
Not Available   
29,730.00 kJ/mol   
12
13th Energy Level
Not Available   
32,446.00 kJ/mol   
12
14th Energy Level
Not Available   
86,450.00 kJ/mol   
1
15th Energy Level
Not Available   
94,170.00 kJ/mol   
2
16th Energy Level
Not Available   
102,300.00 kJ/mol   
3
17th Energy Level
Not Available   
112,700.00 kJ/mol   
4
18th Energy Level
Not Available   
121,600.00 kJ/mol   
5
19th Energy Level
Not Available   
130,700.00 kJ/mol   
6
20th Energy Level
Not Available   
143,400.00 kJ/mol   
8
21st Energy Level
Not Available   
151,440.00 kJ/mol   
8
Electrochemical Equivalent
1.77 g/amp-hr   
39
0.38 g/amp-hr   
99+
Electron Work Function
Not Available   
4.30 eV   
18
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
93   
25
23   
99+
Electron Configuration
[Rn] 5f4 6d1 7s2   
[Ar] 3d3 4s2   
Crystal Structure
Orthorhombic (ORTH)   
Body Centered Cubic (BCC)   
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
93   
25
23   
99+
Number of Neutrons
144   
14
28   
99+
Number of Electrons
93   
25
23   
99+
Radius of an Atom
  
  
Atomic Radius
155.00 pm   
30
134.00 pm   
99+
Covalent Radius
190.00 pm   
18
153.00 pm   
33
Van der Waals Radius
221.00 pm   
22
200.00 pm   
28
Atomic Weight
237.00 amu   
22
50.94 amu   
99+
Atomic Volume
11.62 cm3/mol   
99+
8.78 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Uranium
  
Titanium
  
Next Element
Plutonium
  
Chromium
  
Valence Electron Potential
96.00 (-eV)   
9
120.00 (-eV)   
6
Lattice Constant
666.30 pm   
3
303.00 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
19.38 g/cm3   
14
6.00 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
5.50 g/cm3   
99+
Tensile Strength
125.00 MPa   
14
800.00 MPa   
6
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.11 (Pa)   
17
0.23 (Pa)   
16
Elasticity properties
  
  
Shear Modulus
Not Available   
47.00 GPa   
16
Bulk Modulus
Not Available   
160.00 GPa   
11
Young's Modulus
Not Available   
128.00 GPa   
15
Poisson Ratio
Not Available   
0.37   
7
Other Mechanical Properties
Ductile   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
20.25   
6
5.96   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Superconductor   
Resistivity
1.22 nΩ·m   
99+
197.00 nΩ·m   
19
Electrical Conductivity
0.01 106/cm Ω   
99+
0.05 106/cm Ω   
35
Electron Affinity
Not Available   
50.60 kJ/mol   
20
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.49 J/(kg K)   
10
Molar Heat Capacity
29.46 J/mol·K   
8
24.89 J/mol·K   
99+
Thermal Conductivity
6.30 W/m·K   
99+
30.70 W/m·K   
39
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
8.40 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
458.60 kJ/mol   
14
Enthalpy of Fusion
3.20 kJ/mol   
99+
17.57 kJ/mol   
14
Enthalpy of Atomization
Not Available   
514.60 kJ/mol   
13
Standard Molar Entropy
Not Available   
28.90 J/mol.K   
99+
Summary >>
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