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Silver
Silver

Iridium
Iridium



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Iridium

Silver Iridium Comparison

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1 Periodic Table
1.1 Symbol
Ag
Ir
1.2 Group Number
119
Gadolinium Metal
0 17
1.3 Period Number
56
Lithium Metal
2 7
1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Transition Metal
1.6 CAS Number
74402247439885
Aluminium Metal
7429905 54386242
1.7 Space Group Name
Fm_ 3m
Fm_ 3m
1.8 Space Group Number
225.00225.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
2.2 Sources
Earth's crust, Found in Minerals, Ores of metals
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Unknown
Smithson Tennant
2.3.2 Discovery
Before 5000 BC
In 1803
2.4 Abundance
2.4.1 Abundance In Universe
6 * 10-8 %2 * 10-7 %
Thallium Metal
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000001 %~0.0000002 %
Beryllium Metal
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %0.00 %
Gold Metal
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %0.00 %
Radium Metal
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %NA
Protactinium Metal
2E-23 1.1
2.4.6 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  • 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.
3.1.1 Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry
Automobile Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
Dentistry, Pharmaceutical Industry
NA
3.1.3 Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
0.00 Blood/mg dm-3NA
Plutonium Metal
0 1970
3.2.4 In Bone
0.44 p.p.m.NA
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
961.93 °C2,410.00 °C
Francium Metal
27 3410
4.2 Boiling Point
2,212.00 °C4,527.00 °C
Flerovium Metal
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery White
Silvery White
4.3.3 Luster
Metallic
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
2.506.50
Cesium Metal
0.2 8.5
4.4.2 Brinell Hardness
251.00 MPa1,670.00 MPa
Cesium Metal
0.14 3490
4.4.3 Vickers Hardness
229.00 MPa1,760.00 MPa
Palladium Metal
121 3430
4.5 Speed of Sound
2,680.00 m/s4,825.00 m/s
Thallium Metal
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
4.6.2 Reflectivity
97.00 %78.00 %
Molybdenum Metal
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
Ag
Ir
5.2 Isotopes
5.2.1 Known Isotopes
3634
Tennessine Metal
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.932.20
Francium Metal
0.7 2.54
5.3.2 Sanderson Electronegativity
1.83NA
Cesium Metal
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.421.55
Cesium Metal
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
1.47NA
Cesium Metal
0.62 2.48
5.3.5 Allen Electronegativity
1.871.68
Cesium Metal
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.071.80
Gold Metal
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
731.00 kJ/mol880.00 kJ/mol
Cesium Metal
375.7 26130
5.5.2 2nd Energy Level
2,070.00 kJ/mol1,600.00 kJ/mol
Ruthenium Metal
710.2162 28750
5.5.3 3rd Energy Level
3,361.00 kJ/molNA
Osmium Metal
1600 34230
5.5.4 4th Energy Level
NANA
Thorium Metal
2780 37066
5.5.5 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
5.5.6 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
5.5.7 7th Energy level
NANA
Bohrium Metal
7226.8 114300
5.5.8 8th Energy Level
NANA
Hassium Metal
8857.4 125300
5.5.9 9th Energy Level
NANA
Yttrium Metal
14110 134700
5.5.10 10th Energy Level
NANA
Strontium Metal
17100 144300
5.5.11 11th Energy Level
NANA
Yttrium Metal
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum Metal
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum Metal
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum Metal
29196 86450
5.5.15 15th Energy Level
NANA
Manganese Metal
41987 97510
5.5.16 16th Energy Level
NANA
Iron Metal
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt Metal
52737 122200
5.5.18 18th Energy Level
NANA
Nickel Metal
58570 134810
5.5.19 19th Energy Level
NANA
Copper Metal
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum Metal
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum Metal
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum Metal
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum Metal
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum Metal
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum Metal
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum Metal
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum Metal
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum Metal
154500 154500
5.6 Electrochemical Equivalent
4.02 g/amp-hr1.14 g/amp-hr
Beryllium Metal
0.16812 8.3209
5.7 Electron Work Function
4.26 eV4.55 eV
Cesium Metal
2.14 5.65
5.8 Other Chemical Properties
Chemical Stability, Ionization, Solubility
Flammable, Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
4777
Lithium Metal
3 117
6.2 Electron Configuration
[Kr] 4d10 5s1
[Xe] 4f14 5d7 6s2
6.3 Crystal Structure
Face Centered Cubic (FCC)
Face Centered Cubic (FCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
4774
Lithium Metal
3 117
6.4.2 Number of Neutrons
61110
Lithium Metal
4 184
6.4.3 Number of Electrons
4774
Lithium Metal
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
144.00 pm136.00 pm
Beryllium Metal
112 265
6.5.2 Covalent Radius
145.00 pm141.00 pm
Beryllium Metal
96 260
6.5.3 Van der Waals Radius
172.00 pm202.00 pm
Zinc Metal
139 348
6.6 Atomic Weight
107.87 amu192.22 amu
Lithium Metal
6.94 294
6.7 Atomic Volume
10.30 cm3/mol9.53 cm3/mol
Manganese Metal
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
11.40 (-eV)140.00 (-eV)
Francium Metal
8 392.42
6.10 Lattice Constant
408.53 pm383.90 pm
Beryllium Metal
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 Metal
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
10.49 g/cm322.56 g/cm3
Lithium Metal
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
9.32 g/cm319.00 g/cm3
Lithium Metal
0.512 20
7.2 Tensile Strength
NA2,000.00 MPa
Indium Metal
2.5 11000
7.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
0.00 (Pa)NA
Cerium Metal
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NA0.00 (Pa)
Tungsten Metal
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
30.00 GPa210.00 GPa
Potassium Metal
1.3 222
7.5.2 Bulk Modulus
100.00 GPa320.00 GPa
Cesium Metal
1.6 462
7.5.3 Young's Modulus
83.00 GPa528.00 GPa
Cesium Metal
1.7 528
7.6 Poisson Ratio
0.370.26
Beryllium Metal
0.032 0.47
7.7 Other Mechanical Properties
Ductile, Malleable
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
10.5021.78
Lithium Metal
0.53 4500
8.1.2 Magnetic Ordering
Diamagnetic
Paramagnetic
8.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
8.1.4 Susceptibility
0.00NA
Bismuth Metal
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Conductor
8.2.2 Resistivity
15.87 nΩ·m47.10 nΩ·m
Thallium Metal
0.18 961
8.2.3 Electrical Conductivity
0.63 106/cm Ω0.19 106/cm Ω
Plutonium Metal
0.00666 0.63
8.2.4 Electron Affinity
125.60 kJ/mol151.00 kJ/mol
Mercury Metal
0 222.8
9 Thermal
9.1 Specific Heat
0.24 J/(kg K)0.13 J/(kg K)
Americium Metal
0.11 3.6
9.2 Molar Heat Capacity
25.35 J/mol·K25.10 J/mol·K
Beryllium Metal
16.443 62.7
9.3 Thermal Conductivity
429.00 W/m·K147.00 W/m·K
Neptunium Metal
6.3 429
9.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
9.5 Thermal Expansion
18.90 µm/(m·K)6.40 µm/(m·K)
Tungsten Metal
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
255.10 kJ/mol799.10 kJ/mol
Zinc Metal
7.32 799.1
9.6.2 Enthalpy of Fusion
11.30 kJ/mol35.23 kJ/mol
Cesium Metal
2.1 35.23
9.6.3 Enthalpy of Atomization
284.50 kJ/mol837.00 kJ/mol
Mercury Metal
61.5 837
9.7 Standard Molar Entropy
42.60 J/mol.K35.50 J/mol.K
Beryllium Metal
9.5 198.1