Uranium Gallium Comparison
Periodic Table
Symbol
U
Ga
Group Number
0
18
13
5
Period Number
7
4
Block
f block
p block
Element Family
Actinide
Post-Transition
CAS Number
7440611
28
7440553
32
Space Group Name
Cmcm
Cmca
Space Group Number
63.00
10
64.00
9
Facts
Interesting Facts
- Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
- 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
Earth's crust, Mining, Ores of Minerals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Not Available
Lecoq de Boisbaudran
Discovery
In 1789
In 1875
Abundance
Abundance In Universe
2 * 10-8 %
29
1 * 10-6 %
16
Abundance In Sun
~0.0000001 %
26
~0.000004 %
16
Abundance In Meteorites
0.00 %
99+
0.00 %
16
Abundance In Earth's Crust
0.00 %
36
0.00 %
24
Abundance In Oceans
0.00 %
11
0.00 %
22
Uses
Uses & Benefits
- The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
- Synthetic elements like transuranium are made from Uranium metal.
- 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
Ammunition Industry, Chemical Industry
Electrical Industry, Electronic Industry
Medical Uses
NA
Surgical Instruments Manufacturing
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
Alloys
Biological Properties
Toxicity
Toxic
Non Toxic
Present in Human Body
No
Yes
In Blood
Not Available
0.08 Blood/mg dm-3
13
Physical Properties
Melting Point
1,132.00 °C
39
29.78 °C
99+
Boiling Point
3,818.00 °C
16
2,403.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.00
6
1.50
18
Brinell Hardness
2,350.00 MPa
2
56.80 MPa
99+
Vickers Hardness
1,960.00 MPa
2
Not Available
Speed of Sound
3,155.00 m/s
25
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
U
Ga
Isotopes
Known Isotopes
25
14
24
15
Electronegativity
Pauling Electronegativity
1.38
28
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
2.62
26
2.19
39
Ionization Energies
1st Energy Level
597.60 kJ/mol
99+
578.80 kJ/mol
99+
2nd Energy Level
1,420.00 kJ/mol
99+
1,979.30 kJ/mol
13
3rd Energy Level
1,900.00 kJ/mol
99+
2,963.00 kJ/mol
28
4th Energy Level
3,145.00 kJ/mol
99+
6,180.00 kJ/mol
8
Electrochemical Equivalent
1.48 g/amp-hr
99+
0.87 g/amp-hr
99+
Electron Work Function
3.63 eV
30
4.20 eV
23
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes
Atomic Properties
Atomic Number
92
26
31
99+
Electron Configuration
[Rn] 5f3 6d1 7s2
[Ar] 3d10 4s2 4p1
Crystal Structure
Orthorhombic (ORTH)
Orthorhombic (ORTH)
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100
ORTH-Crystal-Structure-of-Gallium.jpg#100
Atom
Number of Protons
92
26
31
99+
Number of Neutrons
146
13
39
99+
Number of Electrons
92
26
31
99+
Radius of an Atom
Atomic Radius
156.00 pm
29
135.00 pm
99+
Covalent Radius
196.00 pm
14
122.00 pm
99+
Van der Waals Radius
186.00 pm
33
187.00 pm
32
Atomic Weight
238.03 amu
21
69.72 amu
99+
Atomic Volume
12.59 cm3/mol
40
11.80 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
170.00 (-eV)
4
69.70 (-eV)
19
Lattice Constant
295.08 pm
99+
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
19.10 g/cm3
17
5.91 g/cm3
99+
Density When Liquid (at m.p.)
17.30 g/cm3
7
6.10 g/cm3
99+
Tensile Strength
Not Available
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
0.01 (Pa)
20
Not Available
Elasticity properties
Shear Modulus
111.00 GPa
10
Not Available
Bulk Modulus
100.00 GPa
16
Not Available
Young's Modulus
208.00 GPa
10
9.80 GPa
99+
Poisson Ratio
0.23
30
0.47
1
Other Mechanical Properties
Ductile, Malleable
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
18.80
10
5.91
99+
Magnetic Ordering
Paramagnetic
Diamagnetic
Electrical Properties
Electrical Property
Poor Conductor
Semiconductor
Resistivity
0.28 nΩ·m
99+
270.00 nΩ·m
15
Electrical Conductivity
0.04 106/cm Ω
37
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
27.67 J/mol·K
15
25.86 J/mol·K
35
Thermal Conductivity
27.50 W/m·K
40
40.60 W/m·K
34
Critical Temperature
Not Available
Not Available
Thermal Expansion
13.90 µm/(m·K)
27
18.00 µm/(m·K)
24
Enthalpy
Enthalpy of Vaporization
477.00 kJ/mol
13
256.10 kJ/mol
36
Enthalpy of Fusion
15.48 kJ/mol
19
5.59 kJ/mol
99+
Enthalpy of Atomization
489.50 kJ/mol
14
276.10 kJ/mol
39
Standard Molar Entropy
50.20 J/mol.K
31
40.80 J/mol.K
38
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