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Neptunium vs Aluminium

Neptunium
Aluminium
Aluminium vs Neptunium


Periodic Table
Symbol
Np   
Al   
Group Number
Not Available   
13   
5
Period Number
7   
3   
Block
f block   
p block   
Element Family
Actinide   
Post-​Transition   
CAS Number
7439998   
99+
7429905   
99+
Space Group Name
Pnma   
Fm_ 3m   
Space Group Number
62.00   
11
225.00   
2
Facts
Interesting Facts
Not Available   
  • Aluminum’s abundance percentage is more as it is found in more than 260 minerals.
  • Pure Aluminum always reacts with oxygen rapidly.
  • It is a good conductor of heat and electricity and used in transmission lines.
  
Sources
Made by Bombarding Uranium with Neutrons, Ores of metals   
By Electrolysis Process, Earth's crust, Mining   
History
  
  
Who Discovered
Edwin McMillan and Philip H. Abelson   
Hans Christian Oersted   
Discovery
In 1940   
In 1825   
Abundance
  
  
Abundance In Universe
Not Available   
5 * 10-3 %   
5
Abundance In Sun
~-9999 %   
~0.006 %   
5
Abundance In Meteorites
Not Available   
0.91 %   
5
Abundance In Earth's Crust
Not Available   
8.10 %   
1
Abundance In Oceans
Not Available   
0.00 %   
6
Abundance In Humans
Not Available   
0.00 %   
10
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.
  
  • Aluminum is used in a various products; for example, cans, foils, kitchen utensils, window frames, beer kegs and aero plane parts, automobile parts, etc.
  
Industrial Uses
NA   
Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys, Jewellery, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Toxic   
Non Toxic   
Present in Human Body
No   
Yes   
In Blood
0.00 Blood/mg dm-3   
37
0.39 Blood/mg dm-3   
9
In Bone
0.00 p.p.m.   
36
27.00 p.p.m.   
11
Physical Properties
Melting Point
640.00 °C   
99+
660.37 °C   
99+
Boiling Point
3,902.00 °C   
13
2,467.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
2.75   
13
Brinell Hardness
Not Available   
160.00 MPa   
99+
Vickers Hardness
Not Available   
160.00 MPa   
35
Speed of Sound
Not Available   
5,000.00 m/s   
10
Optical Properties
  
  
Reflectivity
Not Available   
71.00 %   
10
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   
Al   
Isotopes
  
  
Known Isotopes
20   
19
11   
27
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
1.61   
22
Sanderson Electronegativity
Not Available   
1.71   
13
Allred Rochow Electronegativity
1.22   
26
1.47   
14
Mulliken-Jaffe Electronegativity
Not Available   
1.83   
8
Allen Electronegativity
Not Available   
1.61   
20
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
2.39   
32
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
577.50 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,816.70 kJ/mol   
19
3rd Energy Level
1,997.00 kJ/mol   
99+
2,744.80 kJ/mol   
38
4th Energy Level
3,242.00 kJ/mol   
99+
11,577.00 kJ/mol   
3
5th Energy Level
Not Available   
14,842.00 kJ/mol   
2
6th Energy Level
Not Available   
18,379.00 kJ/mol   
2
7th Energy level
Not Available   
23,326.00 kJ/mol   
2
8th Energy Level
Not Available   
27,465.00 kJ/mol   
2
9th Energy Level
Not Available   
31,853.00 kJ/mol   
2
10th Energy Level
Not Available   
38,473.00 kJ/mol   
4
11th Energy Level
Not Available   
42,647.00 kJ/mol   
5
Electrochemical Equivalent
1.77 g/amp-hr   
39
0.34 g/amp-hr   
99+
Electron Work Function
Not Available   
4.28 eV   
19
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Chemical Stability, Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
93   
25
13   
99+
Electron Configuration
[Rn] 5f4 6d1 7s2   
[Ne] 3s2 3p1   
Crystal Structure
Orthorhombic (ORTH)   
Face Centered Cubic (FCC)   
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
FCC-Crystal-Structure-of-Aluminium.jpg#100   
Atom
  
  
Number of Protons
93   
25
13   
99+
Number of Neutrons
144   
14
14   
99+
Number of Electrons
93   
25
13   
99+
Radius of an Atom
  
  
Atomic Radius
155.00 pm   
30
143.00 pm   
37
Covalent Radius
190.00 pm   
18
121.00 pm   
99+
Van der Waals Radius
221.00 pm   
22
184.00 pm   
34
Atomic Weight
237.00 amu   
22
26.98 amu   
99+
Atomic Volume
11.62 cm3/mol   
99+
10.00 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Uranium
  
Magnesium
  
Next Element
Plutonium
  
Potassium
  
Valence Electron Potential
96.00 (-eV)   
9
80.70 (-eV)   
17
Lattice Constant
666.30 pm   
3
404.95 pm   
22
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
2.70 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
2.38 g/cm3   
99+
Tensile Strength
125.00 MPa   
14
40.00 MPa   
19
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
18
Vapor Pressure at 2000 K
0.11 (Pa)   
17
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
26.00 GPa   
29
Bulk Modulus
Not Available   
76.00 GPa   
18
Young's Modulus
Not Available   
70.00 GPa   
28
Poisson Ratio
Not Available   
0.35   
9
Other Mechanical Properties
Ductile   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
20.25   
6
2.72   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Permeability
Not Available   
0.00 H/m   
4
Susceptibility
Not Available   
0.00   
3
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
1.22 nΩ·m   
99+
28.20 nΩ·m   
99+
Electrical Conductivity
0.01 106/cm Ω   
99+
0.38 106/cm Ω   
4
Electron Affinity
Not Available   
42.50 kJ/mol   
26
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.90 J/(kg K)   
5
Molar Heat Capacity
29.46 J/mol·K   
8
24.20 J/mol·K   
99+
Thermal Conductivity
6.30 W/m·K   
99+
237.00 W/m·K   
4
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
23.10 µm/(m·K)   
17
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
293.70 kJ/mol   
31
Enthalpy of Fusion
3.20 kJ/mol   
99+
10.67 kJ/mol   
35
Enthalpy of Atomization
Not Available   
322.20 kJ/mol   
31
Standard Molar Entropy
Not Available   
28.30 J/mol.K   
99+
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