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Uranium vs Iridium

Uranium
Iridium
Iridium vs Uranium


Periodic Table
Symbol
U  
Ir  
Group Number
0  
18
9  
9
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440611  
28
7439885  
99+
Space Group Name
Cmcm  
Fm_ 3m  
Space Group Number
63.00  
13
225.00  
3
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
Sources
Earth's crust, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
Smithson Tennant  
Discovery
In 1789  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
30
0.00 %  
23
Abundance In Sun
0.00 %  
26
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
29
Abundance In Earth's Crust
0.00 %  
36
0.00 %  
99+
Abundance In Oceans
0.00 %  
11
-  
Abundance In Humans
0.00 %  
24
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.
  
  • Iridium has an anti corrosion properties and it is used in special alloy with Osmium metal and that alloy is used in pen tips and compass bearings.
  
Industrial Uses
Ammunition Industry, Chemical Industry  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
40
In Bone
1.20 p.p.m.  
19
0.00 p.p.m.  
99+
Physical
Melting Point
1,132.00 °C  
39
2,410.00 °C  
7
Boiling Point
3,818.00 °C  
16
4,527.00 °C  
10
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
6.50  
5
Brinell Hardness
2,350.00 MPa  
2
1,670.00 MPa  
5
Vickers Hardness
1,960.00 MPa  
6
1,760.00 MPa  
8
Speed of Sound
3,155.00 m/s  
36
4,825.00 m/s  
17
Optical Properties
  
  
Refractive Index
1.38  
40
2.40  
7
Reflectivity
80.00 %  
7
78.00 %  
8
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
U  
Ir  
Isotopes
  
  
Known Isotopes
25  
14
34  
5
Electronegativity
  
  
Pauling Electronegativity
1.38  
29
2.20  
5
Sanderson Electronegativity
1.38  
22
2.20  
8
Allred Rochow Electronegativity
1.22  
27
1.55  
12
Mulliken-Jaffe Electronegativity
1.38  
29
2.20  
6
Allen Electronegativity
1.38  
36
1.68  
20
Electropositivity
  
  
Pauling Electropositivity
2.62  
26
1.80  
99+
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
9
2nd Energy Level
1,420.00 kJ/mol  
99+
1,600.00 kJ/mol  
36
3rd Energy Level
1,900.00 kJ/mol  
99+
2,256.10 kJ/mol  
99+
4th Energy Level
3,145.00 kJ/mol  
99+
880.00 kJ/mol  
99+
5th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
8
6th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
25
7th Energy level
5,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
22
8th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
22
9th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
21
10th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
23
11th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
20
12th Energy Level
5,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
40
13th Energy Level
5,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
15
14th Energy Level
5,970.00 kJ/mol  
34
8,800.00 kJ/mol  
14
15th Energy Level
59,700.00 kJ/mol  
99+
88,000.00 kJ/mol  
8
16th Energy Level
59,700.00 kJ/mol  
35
88,000.00 kJ/mol  
9
17th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
26
18th Energy Level
5,976.00 kJ/mol  
99+
8,800.00 kJ/mol  
15
19th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
24
20th Energy Level
597.00 kJ/mol  
99+
880.00 kJ/mol  
14
21st Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
37
22nd Energy Level
597.00 kJ/mol  
99+
880.00 kJ/mol  
12
23rd Energy Level
597.60 kJ/mol  
99+
8,800.00 kJ/mol  
7
24th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
8
25th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
6
26th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
6
27th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
5
28th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
8
29th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
9
30th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
6
Electrochemical Equivalent
1.48 g/amp-hr  
99+
1.14 g/amp-hr  
99+
Electron Work Function
3.63 eV  
99+
4.55 eV  
18
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
92  
26
77  
39
Electron Configuration
[Rn] 5f3 6d1 7s2  
[Xe] 4f14 5d7 6s2  
Crystal Structure
Orthorhombic (ORTH)  
Face Centered Cubic (FCC)  
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100  
FCC-Crystal-Structure-of-Iridium.jpg#100  
Atom
  
  
Number of Protons
92  
26
74  
99+
Number of Neutrons
146  
14
110  
28
Number of Electrons
92  
26
74  
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm  
31
136.00 pm  
99+
Covalent Radius
196.00 pm  
14
141.00 pm  
99+
Van der Waals Radius
186.00 pm  
40
202.00 pm  
34
Atomic Weight
238.03 amu  
21
192.22 amu  
34
Atomic Volume
12.59 cm3/mol  
99+
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Protactinium
  
Osmium
  
Next Element
Neptunium
  
Platinum
  
Valence Electron Potential
170.00 (-eV)  
4
140.00 (-eV)  
5
Lattice Constant
295.08 pm  
99+
383.90 pm  
29
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.02  
99+
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
19.10 g/cm3  
17
22.56 g/cm3  
10
Density When Liquid (at m.p.)
17.30 g/cm3  
17
19.00 g/cm3  
13
Tensile Strength
100.00 MPa  
28
2,000.00 MPa  
2
Viscosity
0.00  
21
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.01 (Pa)  
20
0.00 (Pa)  
26
Elasticity properties
  
  
Shear Modulus
111.00 GPa  
10
210.00 GPa  
2
Bulk Modulus
100.00 GPa  
16
320.00 GPa  
3
Young's Modulus
208.00 GPa  
11
528.00 GPa  
1
Poisson Ratio
0.23  
30
0.26  
22
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
18.80  
19
21.78  
12
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
5
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Conductor  
Resistivity
0.28 nΩ·m  
99+
47.10 nΩ·m  
99+
Electrical Conductivity
0.04 106/cm Ω  
99+
0.19 106/cm Ω  
10
Electron Affinity
50.60 kJ/mol  
25
151.00 kJ/mol  
4
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.67 J/mol·K  
18
25.10 J/mol·K  
99+
Thermal Conductivity
27.50 W/m·K  
99+
147.00 W/m·K  
10
Critical Temperature
1,405.00 K  
99+
2,719.00 K  
8
Thermal Expansion
13.90 µm/(m·K)  
30
6.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol  
18
799.10 kJ/mol  
1
Enthalpy of Fusion
15.48 kJ/mol  
19
35.23 kJ/mol  
1
Enthalpy of Atomization
489.50 kJ/mol  
18
837.00 kJ/mol  
1
Standard Molar Entropy
50.20 J/mol.K  
99+
35.50 J/mol.K  
99+
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