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Neptunium Iron Comparison

Neptunium
Iron
Iron Neptunium comparison


Periodic Table
Symbol
Np   
Fe   
Group Number
Not Available   
8   
10
Period Number
7   
4   
Block
f block   
d block   
Element Family
Actinide   
Transition Metal   
CAS Number
7439998   
99+
7439896   
99+
Space Group Name
Pnma   
Im_ 3m   
Space Group Number
62.00   
11
229.00   
1
Facts
Interesting Facts
Not Available   
  • Iron is not always magnetic in nature, its allotrope are ferromagnetic and the B allotrope is nonmagnetic.
  • The blood consists Iron in hemoglobin molecules to transfer Oxygen in the body.
  
Sources
Made by Bombarding Uranium with Neutrons, Ores of metals   
Earth's crust, Found in Minerals   
History
  
  
Who Discovered
Edwin McMillan and Philip H. Abelson   
Unknown   
Discovery
In 1940   
Before 5000 BC   
Abundance
  
  
Abundance In Universe
Not Available   
1.1 * 10-1 %   
1
Abundance In Sun
~-9999 %   
~0.1 %   
1
Abundance In Meteorites
Not Available   
22.00 %   
1
Abundance In Earth's Crust
Not Available   
6.30 %   
2
Abundance In Oceans
Not Available   
0.00 %   
12
Abundance In Humans
Not Available   
0.01 %   
5
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.
  
  • Iron metal alloy steel is used in the application of civil engineering and manufacturing.
  • Alloys of iron with nickel, vanadium, chromium, tungsten and manganese have very useful properties.
  
Industrial Uses
NA   
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
Pharmaceutical Industry, Surgical Instruments Manufacturing   
Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Toxic   
Non Toxic   
Present in Human Body
No   
Yes   
In Blood
0.00 Blood/mg dm-3   
37
447.00 Blood/mg dm-3   
3
In Bone
0.00 p.p.m.   
36
380.00 p.p.m.   
5
Physical Properties
Melting Point
640.00 °C   
99+
1,535.00 °C   
25
Boiling Point
3,902.00 °C   
13
2,750.00 °C   
37
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
4.00   
10
Brinell Hardness
Not Available   
200.00 MPa   
40
Vickers Hardness
Not Available   
608.00 MPa   
18
Speed of Sound
Not Available   
5,120.00 m/s   
8
Optical Properties
  
  
Reflectivity
Not Available   
65.00 %   
12
Allotropes
No   
Yes   
α Allotropes
Not Available   
Ferrite (alpha Iron)   
β Allotropes
Not Available   
beta Iron   
γ Allotropes
Not Available   
gamma Iron   
Chemical Properties
Chemical Formula
Np   
Fe   
Isotopes
  
  
Known Isotopes
20   
19
26   
13
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
1.83   
14
Sanderson Electronegativity
Not Available   
2.20   
7
Allred Rochow Electronegativity
1.22   
26
1.64   
8
Allen Electronegativity
Not Available   
1.80   
12
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
2.17   
40
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
762.50 kJ/mol   
17
2nd Energy Level
1,128.00 kJ/mol   
99+
1,561.90 kJ/mol   
36
3rd Energy Level
1,997.00 kJ/mol   
99+
2,957.00 kJ/mol   
29
4th Energy Level
3,242.00 kJ/mol   
99+
5,290.00 kJ/mol   
16
5th Energy Level
Not Available   
7,240.00 kJ/mol   
16
6th Energy Level
Not Available   
9,560.00 kJ/mol   
14
7th Energy level
Not Available   
12,060.00 kJ/mol   
15
8th Energy Level
Not Available   
14,580.00 kJ/mol   
14
9th Energy Level
Not Available   
22,540.00 kJ/mol   
5
10th Energy Level
Not Available   
25,290.00 kJ/mol   
8
11th Energy Level
Not Available   
28,000.00 kJ/mol   
9
12th Energy Level
Not Available   
31,920.00 kJ/mol   
9
13th Energy Level
Not Available   
34,830.00 kJ/mol   
9
14th Energy Level
Not Available   
37,840.00 kJ/mol   
11
15th Energy Level
Not Available   
44,100.00 kJ/mol   
11
16th Energy Level
Not Available   
47,206.00 kJ/mol   
13
17th Energy Level
Not Available   
122,200.00 kJ/mol   
1
18th Energy Level
Not Available   
131,000.00 kJ/mol   
2
19th Energy Level
Not Available   
140,500.00 kJ/mol   
3
20th Energy Level
Not Available   
152,600.00 kJ/mol   
5
21st Energy Level
Not Available   
163,000.00 kJ/mol   
5
22nd Energy Level
Not Available   
173,600.00 kJ/mol   
4
23rd Energy Level
Not Available   
188,100.00 kJ/mol   
4
24th Energy Level
Not Available   
195,200.00 kJ/mol   
1
Electrochemical Equivalent
1.77 g/amp-hr   
39
0.69 g/amp-hr   
99+
Electron Work Function
Not Available   
4.70 eV   
10
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Corrosion, Ionization, Solubility   
Atomic Properties
Atomic Number
93   
25
26   
99+
Electron Configuration
[Rn] 5f4 6d1 7s2   
[Ar] 3d6 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
26   
99+
Number of Neutrons
144   
14
30   
99+
Number of Electrons
93   
25
26   
99+
Radius of an Atom
  
  
Atomic Radius
155.00 pm   
30
126.00 pm   
99+
Covalent Radius
190.00 pm   
18
132.00 pm   
99+
Van der Waals Radius
221.00 pm   
22
200.00 pm   
28
Atomic Weight
237.00 amu   
22
55.85 amu   
99+
Atomic Volume
11.62 cm3/mol   
99+
7.10 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Uranium
  
Manganese
  
Next Element
Plutonium
  
Cobalt
  
Valence Electron Potential
96.00 (-eV)   
9
67.00 (-eV)   
20
Lattice Constant
666.30 pm   
3
286.65 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
7.87 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
6.98 g/cm3   
35
Tensile Strength
125.00 MPa   
14
11,000.00 MPa   
1
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
28
Vapor Pressure at 2000 K
0.11 (Pa)   
17
36.80 (Pa)   
5
Elasticity properties
  
  
Shear Modulus
Not Available   
82.00 GPa   
11
Bulk Modulus
Not Available   
170.00 GPa   
10
Young's Modulus
Not Available   
211.00 GPa   
9
Poisson Ratio
Not Available   
0.29   
15
Other Mechanical Properties
Ductile   
Ductile, Malleable, Weldable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
20.25   
6
7.20   
99+
Magnetic Ordering
Paramagnetic   
Ferromagnetic   
Permeability
Not Available   
6.3 * 10-3 H/m   
1
Susceptibility
Not Available   
2,00,000.00   
1
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
1.22 nΩ·m   
99+
96.10 nΩ·m   
32
Electrical Conductivity
0.01 106/cm Ω   
99+
0.10 106/cm Ω   
20
Electron Affinity
Not Available   
15.70 kJ/mol   
34
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.44 J/(kg K)   
13
Molar Heat Capacity
29.46 J/mol·K   
8
25.10 J/mol·K   
99+
Thermal Conductivity
6.30 W/m·K   
99+
80.40 W/m·K   
22
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
11.80 µm/(m·K)   
33
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
351.00 kJ/mol   
23
Enthalpy of Fusion
3.20 kJ/mol   
99+
14.90 kJ/mol   
22
Enthalpy of Atomization
Not Available   
414.20 kJ/mol   
19
Standard Molar Entropy
Not Available   
27.30 J/mol.K   
99+
Summary >>
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