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U Element
Uranium


Periodic Table
Symbol
U
Group Number
0 18
Period Number
7 1
Block
f block
Element Family
Actinide
CAS Number
7440611 28
Space Group Name
Cmcm
Space Group Number
63.00 13
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
Sources
Earth's crust, Mining, Ores of Minerals
History
Who Discovered
-
Discovery
In 1789
Abundance
Abundance In Universe
0.00 % 30
Abundance In Sun
0.00 % 26
Abundance In Meteorites
0.00 % 50
Abundance In Earth's Crust
0.00 % 36
Abundance In Oceans
0.00 % 11
Abundance In Humans
0.00 % 24
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.
Industrial Uses
Ammunition Industry, Chemical Industry
Medical Uses
-
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
Biological Properties
Toxicity
Toxic
Present in Human Body
No
In Blood
0.00 Blood/mg dm-3 37
In Bone
1.20 p.p.m. 19
Physical
Melting Point
1,132.00 °C 39
Boiling Point
3,818.00 °C 16
Appearance
Physical State
Solid
Color
Silvery Gray
Luster
Metallic
Hardness
Mohs Hardness
6.00 6
Brinell Hardness
2,350.00 MPa 2
Vickers Hardness
1,960.00 MPa 6
Speed of Sound
3,155.00 m/s 36
Optical Properties
Refractive Index
1.38 40
Reflectivity
80.00 % 7
Allotropes
No
α Allotropes
-
β Allotropes
-
γ Allotropes
-
Chemical
Chemical Formula
U
Isotopes
Known Isotopes
25 14
Electronegativity
Pauling Electronegativity
1.38 29
Sanderson Electronegativity
1.38 22
Allred Rochow Electronegativity
1.22 27
Mulliken-Jaffe Electronegativity
1.38 29
Allen Electronegativity
1.38 36
Electropositivity
Pauling Electropositivity
2.62 26
Ionization Energies
1st Energy Level
597.60 kJ/mol 54
2nd Energy Level
1,420.00 kJ/mol 47
3rd Energy Level
1,900.00 kJ/mol 83
4th Energy Level
3,145.00 kJ/mol 74
5th Energy Level
5,976.00 kJ/mol 46
6th Energy Level
5,976.00 kJ/mol 60
7th Energy level
5,970.00 kJ/mol 53
8th Energy Level
5,976.00 kJ/mol 51
9th Energy Level
5,976.00 kJ/mol 49
10th Energy Level
5,976.00 kJ/mol 51
11th Energy Level
5,976.00 kJ/mol 56
12th Energy Level
5,970.00 kJ/mol 60
13th Energy Level
5,970.00 kJ/mol 45
14th Energy Level
5,970.00 kJ/mol 34
15th Energy Level
59,700.00 kJ/mol 46
16th Energy Level
59,700.00 kJ/mol 35
17th Energy Level
597.60 kJ/mol 56
18th Energy Level
5,976.00 kJ/mol 48
19th Energy Level
597.60 kJ/mol 53
20th Energy Level
597.00 kJ/mol 50
21st Energy Level
597.60 kJ/mol 63
22nd Energy Level
597.00 kJ/mol 44
23rd Energy Level
597.60 kJ/mol 62
24th Energy Level
597.60 kJ/mol 46
25th Energy Level
597.60 kJ/mol 48
26th Energy Level
597.60 kJ/mol 47
27th Energy Level
597.60 kJ/mol 49
28th Energy Level
597.60 kJ/mol 53
29th Energy Level
597.60 kJ/mol 54
30th Energy Level
597.60 kJ/mol 50
Electrochemical Equivalent
1.48 g/amp-hr 50
Electron Work Function
3.63 eV 41
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Atomic
Atomic Number
92 26
Electron Configuration
[Rn] 5f3 6d1 7s2
Crystal Structure
Orthorhombic (ORTH)
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100
Atom
Number of Protons
92 26
Number of Neutrons
146 14
Number of Electrons
92 26
Radius of an Atom
Atomic Radius
156.00 pm 31
Covalent Radius
196.00 pm 14
Van der Waals Radius
186.00 pm 40
Atomic Weight
238.03 amu 21
Atomic Volume
12.59 cm3/mol 58
Adjacent Atomic Numbers
Previous Element
85
Next Element
54
Valence Electron Potential
170.00 (-eV) 4
Lattice Constant
295.08 pm 68
Lattice Angles
π/2, π/2, π/2
Lattice C/A Ratio
1.02 62
Mechanical
Density
Density At Room Temperature
19.10 g/cm3 17
Density When Liquid (at m.p.)
17.30 g/cm3 17
Tensile Strength
100.00 MPa 28
Viscosity
0.00 21
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa) 37
Vapor Pressure at 2000 K
0.01 (Pa) 20
Elasticity properties
Shear Modulus
111.00 GPa 10
Bulk Modulus
100.00 GPa 16
Young's Modulus
208.00 GPa 11
Poisson Ratio
0.23 30
Other Mechanical Properties
Ductile, Malleable
Magnetic
Magnetic Characteristics
Specific Gravity
18.80 19
Magnetic Ordering
Paramagnetic
Permeability
0.00 H/m 16
Susceptibility
0.00 24
Electrical Properties
Electrical Property
Poor Conductor
Resistivity
0.28 nΩ·m 87
Electrical Conductivity
0.04 106/cm Ω 42
Electron Affinity
50.60 kJ/mol 25
Thermal
Specific Heat
0.12 J/(kg K) 42
Molar Heat Capacity
27.67 J/mol·K 18
Thermal Conductivity
27.50 W/m·K 41
Critical Temperature
1,405.00 K 42
Thermal Expansion
13.90 µm/(m·K) 30
Enthalpy
Enthalpy of Vaporization
477.00 kJ/mol 18
Enthalpy of Fusion
15.48 kJ/mol 19
Enthalpy of Atomization
489.50 kJ/mol 18
Standard Molar Entropy
50.20 J/mol.K 42
Summary >>
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Actinide Series

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Actinide Series

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