Home
 Compare Metals

Neptunium Gallium Comparison

Neptunium
Gallium
Gallium Neptunium comparison


Periodic Table
Symbol
Np   
Ga   
Group Number
Not Available   
13   
5
Period Number
7   
4   
Block
f block   
p block   
Element Family
Actinide   
Post-​Transition   
CAS Number
7439998   
99+
7440553   
32
Space Group Name
Pnma   
Cmca   
Space Group Number
62.00   
11
64.00   
9
Facts
Interesting Facts
Not Available   
  • A gram of Gallium metal can be bought for only three dollars.
  • Gallium metal found in ores of following things Coal, Bauxite, Diaspore, Sphalerite, Germanite and Zinc.
  
Sources
Made by Bombarding Uranium with Neutrons, Ores of metals   
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Edwin McMillan and Philip H. Abelson   
Lecoq de Boisbaudran   
Discovery
In 1940   
In 1875   
Abundance
  
  
Abundance In Universe
Not Available   
1 * 10-6 %   
16
Abundance In Sun
~-9999 %   
~0.000004 %   
16
Abundance In Meteorites
Not Available   
0.00 %   
16
Abundance In Earth's Crust
Not Available   
0.00 %   
24
Abundance In Oceans
Not Available   
0.00 %   
22
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.
  
  • Gallium arsenide is a very important component of many semiconductors and led manufacturing.
  • Gallium nitride is also know as a semiconductor and it is used in Blu-ray technology, mobile smartphones and LED.
  
Industrial Uses
NA   
Electrical Industry, Electronic Industry   
Medical Uses
NA   
Surgical Instruments Manufacturing   
Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Toxic   
Non Toxic   
Present in Human Body
No   
Yes   
In Blood
0.00 Blood/mg dm-3   
37
0.08 Blood/mg dm-3   
13
In Bone
0.00 p.p.m.   
36
Not Available   
Physical Properties
Melting Point
640.00 °C   
99+
29.78 °C   
99+
Boiling Point
3,902.00 °C   
13
2,403.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
1.50   
18
Brinell Hardness
Not Available   
56.80 MPa   
99+
Speed of Sound
Not Available   
2,740.00 m/s   
31
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   
Ga   
Isotopes
  
  
Known Isotopes
20   
19
24   
15
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
1.81   
15
Sanderson Electronegativity
Not Available   
2.42   
2
Allred Rochow Electronegativity
1.22   
26
1.82   
1
Mulliken-Jaffe Electronegativity
Not Available   
2.01   
5
Allen Electronegativity
Not Available   
1.76   
14
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
2.19   
39
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
578.80 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,979.30 kJ/mol   
13
3rd Energy Level
1,997.00 kJ/mol   
99+
2,963.00 kJ/mol   
28
4th Energy Level
3,242.00 kJ/mol   
99+
6,180.00 kJ/mol   
8
Electrochemical Equivalent
1.77 g/amp-hr   
39
0.87 g/amp-hr   
99+
Electron Work Function
Not Available   
4.20 eV   
23
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
93   
25
31   
99+
Electron Configuration
[Rn] 5f4 6d1 7s2   
[Ar] 3d10 4s2 4p1   
Crystal Structure
Orthorhombic (ORTH)   
Orthorhombic (ORTH)   
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
ORTH-Crystal-Structure-of-Gallium.jpg#100   
Atom
  
  
Number of Protons
93   
25
31   
99+
Number of Neutrons
144   
14
39   
99+
Number of Electrons
93   
25
31   
99+
Radius of an Atom
  
  
Atomic Radius
155.00 pm   
30
135.00 pm   
99+
Covalent Radius
190.00 pm   
18
122.00 pm   
99+
Van der Waals Radius
221.00 pm   
22
187.00 pm   
32
Atomic Weight
237.00 amu   
22
69.72 amu   
99+
Atomic Volume
11.62 cm3/mol   
99+
11.80 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Uranium
  
Zinc
  
Next Element
Plutonium
  
Rubidium
  
Valence Electron Potential
96.00 (-eV)   
9
69.70 (-eV)   
19
Lattice Constant
666.30 pm   
3
451.97 pm   
18
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
5.91 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
6.10 g/cm3   
99+
Tensile Strength
125.00 MPa   
14
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
15
Vapor Pressure at 2000 K
0.11 (Pa)   
17
Not Available   
Elasticity properties
  
  
Young's Modulus
Not Available   
9.80 GPa   
99+
Poisson Ratio
Not Available   
0.47   
1
Other Mechanical Properties
Ductile   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
20.25   
6
5.91   
99+
Magnetic Ordering
Paramagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Semiconductor   
Resistivity
1.22 nΩ·m   
99+
270.00 nΩ·m   
15
Electrical Conductivity
0.01 106/cm Ω   
99+
0.07 106/cm Ω   
29
Electron Affinity
Not Available   
28.90 kJ/mol   
31
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.37 J/(kg K)   
16
Molar Heat Capacity
29.46 J/mol·K   
8
25.86 J/mol·K   
35
Thermal Conductivity
6.30 W/m·K   
99+
40.60 W/m·K   
34
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
18.00 µm/(m·K)   
24
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
256.10 kJ/mol   
36
Enthalpy of Fusion
3.20 kJ/mol   
99+
5.59 kJ/mol   
99+
Enthalpy of Atomization
Not Available   
276.10 kJ/mol   
39
Standard Molar Entropy
Not Available   
40.80 J/mol.K   
38
Summary >>
<< Thermal

Compare Actinide Series

Actinide Metals

Actinide Metals

» More Actinide Metals

Compare Actinide Series

» More Compare Actinide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!