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Iridium vs Zinc

Iridium
Zinc
Zinc vs Iridium


Periodic Table
Symbol
Ir  
Zn  
Group Number
9  
9
12  
6
Period Number
6  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7439885  
99+
7440666  
24
Space Group Name
Fm_ 3m  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
Facts
Interesting Facts
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
  • Zinc metal found (obtain) in many forms like granules, foil, dust and in a powder form.
  • The leading producers of Zinc metal are Australia, Canada, China, U.S.A and Peru.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Smithson Tennant  
Indian metallurgists  
Discovery
In 1803  
Before 1000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
12
Abundance In Sun
0.00 %  
25
0.00 %  
10
Abundance In Meteorites
0.00 %  
29
0.02 %  
12
Abundance In Earth's Crust
0.00 %  
99+
0.01 %  
16
Abundance In Oceans
-  
0.00 %  
10
Abundance In Humans
0.00 %  
24
0.00 %  
7
Uses
Uses & Benefits
  • 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.
  
  • It is mainly used for Galvanizing other metals.
  • It is also used for manufacturing die-casting and it is very essential for automobile industry.
  
Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry  
Electrical Industry, Electronic Industry  
Medical Uses
-  
Pharmaceutical Industry  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Highly Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
7.00 Blood/mg dm-3  
6
In Bone
0.00 p.p.m.  
99+
170.00 p.p.m.  
6
Physical
Melting Point
2,410.00 °C  
7
419.58 °C  
99+
Boiling Point
4,527.00 °C  
10
907.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
2.50  
15
Brinell Hardness
1,670.00 MPa  
5
327.00 MPa  
39
Vickers Hardness
1,760.00 MPa  
8
207.00 MPa  
99+
Speed of Sound
4,825.00 m/s  
17
3,850.00 m/s  
25
Optical Properties
  
  
Refractive Index
2.40  
7
1.00  
99+
Reflectivity
78.00 %  
8
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ir  
Zn  
Isotopes
  
  
Known Isotopes
34  
5
25  
14
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
1.65  
20
Sanderson Electronegativity
2.20  
8
2.23  
7
Allred Rochow Electronegativity
1.55  
12
1.66  
8
Mulliken-Jaffe Electronegativity
2.20  
6
1.65  
20
Allen Electronegativity
1.68  
20
1.59  
25
Electropositivity
  
  
Pauling Electropositivity
1.80  
99+
2.35  
35
Ionization Energies
  
  
1st Energy Level
880.00 kJ/mol  
9
906.40 kJ/mol  
6
2nd Energy Level
1,600.00 kJ/mol  
36
1,733.30 kJ/mol  
28
3rd Energy Level
2,256.10 kJ/mol  
99+
3,833.00 kJ/mol  
12
4th Energy Level
880.00 kJ/mol  
99+
5,731.00 kJ/mol  
20
5th Energy Level
8,800.00 kJ/mol  
8
7,970.00 kJ/mol  
15
6th Energy Level
8,800.00 kJ/mol  
25
10,400.00 kJ/mol  
15
7th Energy level
8,800.00 kJ/mol  
22
12,900.00 kJ/mol  
9
8th Energy Level
8,800.00 kJ/mol  
22
16,800.00 kJ/mol  
6
9th Energy Level
8,800.00 kJ/mol  
21
19,600.00 kJ/mol  
8
10th Energy Level
8,800.00 kJ/mol  
23
23,000.00 kJ/mol  
10
11th Energy Level
8,800.00 kJ/mol  
20
26,400.00 kJ/mol  
11
12th Energy Level
8,800.00 kJ/mol  
40
29,990.00 kJ/mol  
33
13th Energy Level
8,800.00 kJ/mol  
15
40,490.00 kJ/mol  
5
14th Energy Level
8,800.00 kJ/mol  
14
43,800.00 kJ/mol  
6
15th Energy Level
88,000.00 kJ/mol  
8
47,300.00 kJ/mol  
99+
16th Energy Level
88,000.00 kJ/mol  
9
52,300.00 kJ/mol  
99+
17th Energy Level
880.00 kJ/mol  
26
55,900.00 kJ/mol  
10
18th Energy Level
8,800.00 kJ/mol  
15
59,700.00 kJ/mol  
11
19th Energy Level
880.00 kJ/mol  
24
67,300.00 kJ/mol  
10
20th Energy Level
880.00 kJ/mol  
14
171,200.00 kJ/mol  
1
21st Energy Level
880.00 kJ/mol  
37
179,100.00 kJ/mol  
1
22nd Energy Level
880.00 kJ/mol  
12
906.00 kJ/mol  
9
23rd Energy Level
8,800.00 kJ/mol  
7
906.40 kJ/mol  
37
24th Energy Level
880.00 kJ/mol  
8
906.40 kJ/mol  
5
25th Energy Level
880.00 kJ/mol  
6
906.40 kJ/mol  
4
26th Energy Level
880.00 kJ/mol  
6
906.40 kJ/mol  
4
27th Energy Level
880.00 kJ/mol  
5
906.40 kJ/mol  
3
28th Energy Level
880.00 kJ/mol  
8
906.40 kJ/mol  
6
29th Energy Level
880.00 kJ/mol  
9
906.40 kJ/mol  
7
30th Energy Level
880.00 kJ/mol  
6
906.40 kJ/mol  
4
Electrochemical Equivalent
1.14 g/amp-hr  
99+
1.22 g/amp-hr  
99+
Electron Work Function
4.55 eV  
18
4.33 eV  
24
Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
77  
39
30  
99+
Electron Configuration
[Xe] 4f14 5d7 6s2  
[Ar] 3d10 4s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100  
HCP-Crystal-Structure-of-Zinc.jpg#100  
Atom
  
  
Number of Protons
74  
99+
30  
99+
Number of Neutrons
110  
28
35  
99+
Number of Electrons
74  
99+
30  
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
134.00 pm  
99+
Covalent Radius
141.00 pm  
99+
122.00 pm  
99+
Van der Waals Radius
202.00 pm  
34
139.00 pm  
99+
Atomic Weight
192.22 amu  
34
65.38 amu  
99+
Atomic Volume
9.53 cm3/mol  
99+
9.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Osmium
  
Copper
  
Next Element
Platinum
  
Gallium
  
Valence Electron Potential
140.00 (-eV)  
5
38.90 (-eV)  
99+
Lattice Constant
383.90 pm  
29
266.49 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.58  
35
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
22.56 g/cm3  
10
7.14 g/cm3  
99+
Density When Liquid (at m.p.)
19.00 g/cm3  
13
6.57 g/cm3  
99+
Tensile Strength
2,000.00 MPa  
2
120.00 MPa  
27
Viscosity
0.00  
21
0.00  
7
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
26
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
210.00 GPa  
2
43.00 GPa  
18
Bulk Modulus
320.00 GPa  
3
70.00 GPa  
20
Young's Modulus
528.00 GPa  
1
108.00 GPa  
21
Poisson Ratio
0.26  
22
0.25  
24
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
21.78  
12
6.90  
99+
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
16
Susceptibility
0.00  
5
0.00  
6
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
47.10 nΩ·m  
99+
59.00 nΩ·m  
40
Electrical Conductivity
0.19 106/cm Ω  
10
0.17 106/cm Ω  
12
Electron Affinity
151.00 kJ/mol  
4
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.39 J/(kg K)  
14
Molar Heat Capacity
25.10 J/mol·K  
99+
25.47 J/mol·K  
99+
Thermal Conductivity
147.00 W/m·K  
10
116.00 W/m·K  
14
Critical Temperature
2,719.00 K  
8
692.00 K  
99+
Thermal Expansion
6.40 µm/(m·K)  
99+
30.20 µm/(m·K)  
11
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol  
1
7.32 kJ/mol  
99+
Enthalpy of Fusion
35.23 kJ/mol  
1
7.32 kJ/mol  
99+
Enthalpy of Atomization
837.00 kJ/mol  
1
129.70 kJ/mol  
99+
Standard Molar Entropy
35.50 J/mol.K  
99+
41.60 J/mol.K  
99+
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