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Neptunium Iron Comparison


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+

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