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Uranium
Uranium

Chromium
Chromium



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Uranium vs Chromium

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1 Periodic Table
1.1 Symbol
U
Cr
1.2 Group Number
06
Gadolinium
0 17
1.3 Period Number
74
Lithium
2 7
1.4 Block
f block
d block
1.5 Element Family
Actinide
Transition Metal
1.6 CAS Number
74406117440473
Aluminium
7429905 54386242
1.7 Space Group Name
Cmcm
Im_ 3m
1.8 Space Group Number
63.00229.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
2.2 Sources
Earth's crust, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of metals, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Not Available
Louis Nicolas Vauquelin
2.3.2 Discovery
In 1789
In Between 1797 - 1798
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-8 %1.5 * 10-3 %
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000001 %~0.002 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %0.30 %
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %0.01 %
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %0.00 %
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
NA0.00 %
Radium
1E-13 1.4
3 Uses
3.1 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.
  • It is used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
3.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
Automobile Industry, Chemical Industry
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Highly Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
NA0.11 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
NA0.33 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
1,132.00 °C1,857.00 °C
Francium
27 3410
4.2 Boiling Point
3,818.00 °C2,672.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery Gray
Silver
4.3.3 Luster
Metallic
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
6.008.50
Cesium
0.2 8.5
4.4.2 Brinell Hardness
2,350.00 MPa687.00 MPa
Cesium
0.14 3490
4.4.3 Vickers Hardness
1,960.00 MPa1,060.00 MPa
Palladium
121 3430
4.5 Speed of Sound
3,155.00 m/s5,940.00 m/s
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum
58 97
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
U
Cr
5.2 Isotopes
5.2.1 Known Isotopes
2521
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.381.66
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
NA1.66
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.221.56
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
NA1.65
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.622.34
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
597.60 kJ/mol26,130.00 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
1,420.00 kJ/mol28,750.00 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
1,900.00 kJ/mol34,230.00 kJ/mol
Osmium
1600 34230
5.5.4 4th Energy Level
3,145.00 kJ/mol37,066.00 kJ/mol
Thorium
2780 37066
5.5.5 5th Energy Level
NA97,510.00 kJ/mol
Dubnium
4305.2 97510
5.5.6 6th Energy Level
NA105,800.00 kJ/mol
Seaborgium
5715.8 105800
5.5.7 7th Energy level
NA114,300.00 kJ/mol
Bohrium
7226.8 114300
5.5.8 8th Energy Level
NA125,300.00 kJ/mol
Hassium
8857.4 125300
5.5.9 9th Energy Level
NA134,700.00 kJ/mol
Yttrium
14110 134700
5.5.10 10th Energy Level
NA144,300.00 kJ/mol
Strontium
17100 144300
5.5.11 11th Energy Level
NA26,130.00 kJ/mol
Yttrium
19900 169988
5.5.12 12th Energy Level
NA28,750.00 kJ/mol
Molybdenum
22219 189368
5.5.13 13th Energy Level
NA34,230.00 kJ/mol
Molybdenum
26930 76015
5.5.14 14th Energy Level
NA37,066.00 kJ/mol
Molybdenum
29196 86450
5.5.15 15th Energy Level
NA97,510.00 kJ/mol
Manganese
41987 97510
5.5.16 16th Energy Level
NA105,800.00 kJ/mol
Iron
47206 109480
5.5.17 17th Energy Level
NA114,300.00 kJ/mol
Cobalt
52737 122200
5.5.18 18th Energy Level
NA125,300.00 kJ/mol
Nickel
58570 134810
5.5.19 19th Energy Level
NA134,700.00 kJ/mol
Copper
64702 148700
5.5.20 20th Energy Level
NA144,300.00 kJ/mol
Molybdenum
80400 171200
5.5.21 21st Energy Level
NA157,700.00 kJ/mol
Molybdenum
87000 179100
5.5.22 22nd Energy Level
NA166,090.00 kJ/mol
Molybdenum
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum
154500 154500
5.6 Electrochemical Equivalent
1.48 g/amp-hr0.32 g/amp-hr
Beryllium
0.16812 8.3209
5.7 Electron Work Function
3.63 eV4.50 eV
Cesium
2.14 5.65
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility
6 Atomic
6.1 Atomic Number
9224
Lithium
3 117
6.2 Electron Configuration
[Rn] 5f3 6d1 7s2
[Ar] 3d5 4s1
6.3 Crystal Structure
Orthorhombic (ORTH)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
9224
Lithium
3 117
6.4.2 Number of Neutrons
14628
Lithium
4 184
6.4.3 Number of Electrons
9224
Lithium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
156.00 pm128.00 pm
Beryllium
112 265
6.5.2 Covalent Radius
196.00 pm139.00 pm
Beryllium
96 260
6.5.3 Van der Waals Radius
186.00 pm200.00 pm
Zinc
139 348
6.6 Atomic Weight
238.03 amu52.00 amu
Lithium
6.94 294
6.7 Atomic Volume
12.59 cm3/mol7.23 cm3/mol
Manganese
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
170.00 (-eV)170.00 (-eV)
Francium
8 392.42
6.10 Lattice Constant
295.08 pm291.00 pm
Beryllium
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
19.10 g/cm37.19 g/cm3
Lithium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
17.30 g/cm36.30 g/cm3
Lithium
0.512 20
7.2 Tensile Strength
NA689.00 MPa
Indium
2.5 11000
7.3 Viscosity
NANA
Mercury
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NA0.00 (Pa)
Cerium
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
0.01 (Pa)774.00 (Pa)
Tungsten
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
111.00 GPa115.00 GPa
Potassium
1.3 222
7.5.2 Bulk Modulus
100.00 GPa160.00 GPa
Cesium
1.6 462
7.5.3 Young's Modulus
208.00 GPa279.00 GPa
Cesium
1.7 528
7.6 Poisson Ratio
0.230.21
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
Ductile, Malleable
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
18.807.19
Lithium
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Antiferromagnetic
8.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Poor Conductor
NA
8.2.2 Resistivity
0.28 nΩ·m125.00 nΩ·m
Thallium
0.18 961
8.2.3 Electrical Conductivity
0.04 106/cm Ω0.08 106/cm Ω
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
NA64.30 kJ/mol
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
0.12 J/(kg K)0.45 J/(kg K)
Americium
0.11 3.6
9.2 Molar Heat Capacity
27.67 J/mol·K23.35 J/mol·K
Beryllium
16.443 62.7
9.3 Thermal Conductivity
27.50 W/m·K93.90 W/m·K
Neptunium
6.3 429
9.4 Critical Temperature
NANA
Ytterbium
26.3 3223
9.5 Thermal Expansion
13.90 µm/(m·K)4.90 µm/(m·K)
Tungsten
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
477.00 kJ/mol348.80 kJ/mol
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
15.48 kJ/mol15.31 kJ/mol
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
489.50 kJ/mol397.50 kJ/mol
Mercury
61.5 837
9.7 Standard Molar Entropy
50.20 J/mol.K23.80 J/mol.K
Beryllium
9.5 198.1