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Iridium
Iridium

Barium
Barium



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Iridium
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Barium

Iridium Barium Comparison

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1 Periodic Table
1.1 Symbol
Ir
Ba
1.2 Group Number
92
Gadolinium Metal
0 17
1.4 Period Number
66
Lithium Metal
2 7
1.7 Block
d block
s block
1.8 Element Family
Transition Metal
Alkaline Earth
1.9 CAS Number
74398857440393
Aluminium Metal
7429905 54386242
1.16 Space Group Name
Fm_ 3m
Im_ 3m
1.17 Space Group Number
225.00229.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  • Barium oxidizes very easily in the air.
  • All toxic compounds of Barium can easily dissolve in water.
  • Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Smithson Tennant
Carl Wilhelm Scheele
2.3.2 Discovery
In 1803
In 1772
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %1 * 10-6 %
Thallium Metal
5E-09 0.11
3.4.2 Abundance In Sun
~0.0000002 %~0.000001 %
Beryllium Metal
1E-08 0.1
4.4.4 Abundance In Meteorites
0.00 %0.00 %
Gold Metal
1.7E-07 22
4.4.8 Abundance In Earth's Crust
0.00 %0.03 %
Radium Metal
9.9E-12 8.1
4.4.13 Abundance In Oceans
NA0.00 %
Protactinium Metal
2E-23 1.1
6.2.4 Abundance In Humans
NA0.00 %
Radium Metal
1E-13 1.4
7 Uses
7.1 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 sued in chemical paint manufacturing and glass manufacturing.
  • Compounds of this metal are toxic; but still the barium sulfate is insoluble and given to patients suffering from digestive disorder.
7.1.1 Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
7.1.2 Medical Uses
NA
NA
7.1.3 Other Uses
Alloys
Alloys
7.2 Biological Properties
7.2.1 Toxicity
Toxic
Low Toxic
7.2.2 Present in Human Body
8.1.1 In Blood
NA0.07 Blood/mg dm-3
Plutonium Metal
0 1970
9.3.1 In Bone
NA70.00 p.p.m.
Plutonium Metal
0 170000
10 Physical
10.1 Melting Point
2,410.00 °C725.00 °C
Francium Metal
27 3410
10.2 Boiling Point
4,527.00 °C1,140.00 °C
Flerovium Metal
147 5660
10.5 Appearance
10.5.1 Physical State
Solid
Solid
10.5.2 Color
Silvery White
Silvery Gray
10.5.3 Luster
Metallic
NA
10.6 Hardness
10.6.1 Mohs Hardness
6.501.25
Cesium Metal
0.2 8.5
11.3.4 Brinell Hardness
1,670.00 MPaNA
Cesium Metal
0.14 3490
12.4.3 Vickers Hardness
1,760.00 MPaNA
Palladium Metal
121 3430
12.5 Speed of Sound
4,825.00 m/s1,620.00 m/s
Thallium Metal
818 16200
12.6 Optical Properties
12.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
12.7.2 Reflectivity
78.00 %NA
Molybdenum Metal
58 97
12.9 Allotropes
12.9.1 α Allotropes
Not Available
Not Available
12.9.2 β Allotropes
Not Available
Not Available
12.9.3 γ Allotropes
Not Available
Not Available
13 Chemical
13.1 Chemical Formula
Ir
Ba
13.3 Isotopes
13.3.1 Known Isotopes
3437
Tennessine Metal
0 38
13.4 Electronegativity
13.4.1 Pauling Electronegativity
2.200.89
Francium Metal
0.7 2.54
13.5.2 Sanderson Electronegativity
NA0.68
Cesium Metal
0.22 2.56
13.5.5 Allred Rochow Electronegativity
1.550.97
Cesium Metal
0.86 1.82
13.5.8 Mulliken-Jaffe Electronegativity
NA0.88
Cesium Metal
0.62 2.48
13.5.11 Allen Electronegativity
1.680.88
Cesium Metal
0.659 2.7
13.6 Electropositivity
13.6.1 Pauling Electropositivity
1.803.11
Gold Metal
1.46 3.3
13.7 Ionization Energies
13.7.1 1st Energy Level
880.00 kJ/mol502.90 kJ/mol
Cesium Metal
375.7 26130
13.7.4 2nd Energy Level
1,600.00 kJ/mol965.20 kJ/mol
Ruthenium Metal
710.2162 28750
13.7.7 3rd Energy Level
NA3,600.00 kJ/mol
Osmium Metal
1600 34230
13.7.10 4th Energy Level
NANA
Thorium Metal
2780 37066
13.7.13 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
13.7.16 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
13.7.19 7th Energy level
NANA
Bohrium Metal
7226.8 114300
13.7.22 8th Energy Level
NANA
Hassium Metal
8857.4 125300
13.7.24 9th Energy Level
NANA
Yttrium Metal
14110 134700
13.7.27 10th Energy Level
NANA
Strontium Metal
17100 144300
13.7.30 11th Energy Level
NANA
Yttrium Metal
19900 169988
13.7.34 12th Energy Level
NANA
Molybdenum Metal
22219 189368
13.7.37 13th Energy Level
NANA
Molybdenum Metal
26930 76015
13.7.40 14th Energy Level
NANA
Molybdenum Metal
29196 86450
13.7.44 15th Energy Level
NANA
Manganese Metal
41987 97510
13.7.48 16th Energy Level
NANA
Iron Metal
47206 109480
13.7.51 17th Energy Level
NANA
Cobalt Metal
52737 122200
13.7.54 18th Energy Level
NANA
Nickel Metal
58570 134810
13.7.58 19th Energy Level
NANA
Copper Metal
64702 148700
13.7.62 20th Energy Level
NANA
Molybdenum Metal
80400 171200
13.7.65 21st Energy Level
NANA
Molybdenum Metal
87000 179100
13.8.1 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
13.8.3 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
13.9.1 24th Energy Level
NANA
Molybdenum Metal
104400 195200
13.10.1 25th Energy Level
NANA
Molybdenum Metal
121900 121900
14.1.1 26th Energy Level
NANA
Molybdenum Metal
127700 127700
14.2.1 27th Energy Level
NANA
Molybdenum Metal
133800 133800
15.1.1 28th Energy Level
NANA
Molybdenum Metal
139800 139800
15.1.2 29th Energy Level
NANA
Molybdenum Metal
148100 148100
15.4.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
15.5 Electrochemical Equivalent
1.14 g/amp-hr2.56 g/amp-hr
Beryllium Metal
0.16812 8.3209
15.6 Electron Work Function
4.55 eV2.70 eV
Cesium Metal
2.14 5.65
15.8 Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity, Solubility
16 Atomic
16.1 Atomic Number
7756
Lithium Metal
3 117
16.3 Electron Configuration
[Xe] 4f14 5d7 6s2
[Xe] 6s2
16.4 Crystal Structure
Face Centered Cubic (FCC)
Body Centered Cubic (BCC)
16.4.1 Crystal Lattice
16.5 Atom
16.5.1 Number of Protons
7456
Lithium Metal
3 117
16.6.1 Number of Neutrons
11081
Lithium Metal
4 184
16.6.3 Number of Electrons
7456
Lithium Metal
3 117
16.9 Radius of an Atom
16.9.1 Atomic Radius
136.00 pm222.00 pm
Beryllium Metal
112 265
16.12.1 Covalent Radius
141.00 pm215.00 pm
Beryllium Metal
96 260
16.13.1 Van der Waals Radius
202.00 pm268.00 pm
Zinc Metal
139 348
16.16 Atomic Weight
192.22 amu137.33 amu
Lithium Metal
6.94 294
17.2 Atomic Volume
9.53 cm3/mol39.24 cm3/mol
Manganese Metal
1.39 71.07
18.2 Adjacent Atomic Numbers
18.2.1 Previous Element
18.2.2 Next Element
18.3 Valence Electron Potential
140.00 (-eV)21.30 (-eV)
Francium Metal
8 392.42
18.4 Lattice Constant
383.90 pm502.80 pm
Beryllium Metal
228.58 891.25
18.7 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
18.8 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
19 Mechanical
19.1 Density
19.1.1 Density At Room Temperature
22.56 g/cm33.51 g/cm3
Lithium Metal
0.534 40.7
19.2.2 Density When Liquid (at m.p.)
19.00 g/cm33.34 g/cm3
Lithium Metal
0.512 20
19.5 Tensile Strength
2,000.00 MPaNA
Indium Metal
2.5 11000
19.6 Viscosity
NANA
Mercury Metal
0.001526 0.001526
19.8 Vapor Pressure
19.8.1 Vapor Pressure at 1000 K
NA7.11 (Pa)
Cerium Metal
2.47E-11 121
19.8.4 Vapor Pressure at 2000 K
0.00 (Pa)NA
Tungsten Metal
2.62E-10 774
19.9 Elasticity properties
19.9.1 Shear Modulus
210.00 GPa4.90 GPa
Potassium Metal
1.3 222
19.10.1 Bulk Modulus
320.00 GPa9.60 GPa
Cesium Metal
1.6 462
21.1.2 Young's Modulus
528.00 GPa13.00 GPa
Cesium Metal
1.7 528
21.2 Poisson Ratio
0.26NA
Beryllium Metal
0.032 0.47
21.4 Other Mechanical Properties
NA
NA
22 Magnetic
22.1 Magnetic Characteristics
22.1.1 Specific Gravity
21.783.62
Lithium Metal
0.53 4500
22.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
22.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
22.2.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
22.3 Electrical Properties
22.3.1 Electrical Property
Conductor
Superconductor
22.3.2 Resistivity
47.10 nΩ·m332.00 nΩ·m
Thallium Metal
0.18 961
23.1.1 Electrical Conductivity
0.19 106/cm Ω0.03 106/cm Ω
Plutonium Metal
0.00666 0.63
24.2.1 Electron Affinity
151.00 kJ/mol13.95 kJ/mol
Mercury Metal
0 222.8
25 Thermal
25.1 Specific Heat
0.13 J/(kg K)0.20 J/(kg K)
Americium Metal
0.11 3.6
25.4 Molar Heat Capacity
25.10 J/mol·K28.07 J/mol·K
Beryllium Metal
16.443 62.7
25.7 Thermal Conductivity
147.00 W/m·K18.40 W/m·K
Neptunium Metal
6.3 429
25.10 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
25.12 Thermal Expansion
6.40 µm/(m·K)20.60 µm/(m·K)
Tungsten Metal
4.5 97
25.13 Enthalpy
25.13.1 Enthalpy of Vaporization
799.10 kJ/mol140.00 kJ/mol
Zinc Metal
7.32 799.1
25.13.3 Enthalpy of Fusion
35.23 kJ/mol7.66 kJ/mol
Cesium Metal
2.1 35.23
25.14.1 Enthalpy of Atomization
837.00 kJ/mol175.70 kJ/mol
Mercury Metal
61.5 837
25.16 Standard Molar Entropy
35.50 J/mol.K62.50 J/mol.K
Beryllium Metal
9.5 198.1