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Iridium
Iridium

Gadolinium
Gadolinium



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Iridium
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Gadolinium

Iridium Gadolinium Comparison

1 Periodic Table
1.1 Symbol
Ir
Gd
1.2 Group Number
90
Sodium
0 17
1.3 Period Number
66
Lithium Metal
2 7
1.4 Block
d block
f block
1.5 Element Family
Transition Metal
Lanthanide
1.6 CAS Number
74398857440542
Aluminium Metal
7429905 54386242
1.7 Space Group Name
Fm_ 3m
P63/mmc
1.8 Space Group Number
225.00194.00
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 .
  • Gadolinium is not found free in nature, hence it is not a native metal.
  • Gadolinium metal found in minerals like Monazite and Bastnaesite.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Smithson Tennant
Jean Charles Galissard de Marignac
2.3.2 Discovery
In 1803
In 1880
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %2 * 10-7 %
Thallium Metal
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000002 %~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
NA0.00 %
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
  • 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.
  • Its alloys are also used in making Magnets, electronic components and Data storage devices.
  • Compound of Gadolinium metal are used in magnetic resonance imaging (MRI).
3.1.1 Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry
Aerospace Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Non Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
NANA
Plutonium Metal
0 1970
3.2.4 In Bone
NANA
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
2,410.00 °C1,311.00 °C
Francium Metal
27 3410
4.2 Boiling Point
4,527.00 °C3,233.00 °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
6.50NA
Cesium Metal
0.2 8.5
4.4.2 Brinell Hardness
1,670.00 MPaNA
Cesium Metal
0.14 3490
4.4.3 Vickers Hardness
1,760.00 MPa510.00 MPa
Palladium Metal
121 3430
4.5 Speed of Sound
4,825.00 m/s2,680.00 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
78.00 %NA
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
Ir
Gd
5.2 Isotopes
5.2.1 Known Isotopes
3426
Tennessine Metal
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
2.201.20
Francium Metal
0.7 2.54
5.3.2 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.551.11
Cesium Metal
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
5.3.5 Allen Electronegativity
1.68NA
Cesium Metal
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
1.802.80
Gold Metal
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
880.00 kJ/mol593.40 kJ/mol
Cesium Metal
375.7 26130
5.5.2 2nd Energy Level
1,600.00 kJ/mol1,170.00 kJ/mol
Ruthenium Metal
710.2162 28750
5.5.3 3rd Energy Level
NA1,990.00 kJ/mol
Osmium Metal
1600 34230
5.5.4 4th Energy Level
NA4,250.00 kJ/mol
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
1.14 g/amp-hr1.96 g/amp-hr
Beryllium Metal
0.16812 8.3209
5.7 Electron Work Function
4.55 eV3.10 eV
Cesium Metal
2.14 5.65
5.8 Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity
Corrosion, Flammable, Ionization, Radioactive Isotopes
6 Atomic
6.1 Atomic Number
7764
Lithium Metal
3 117
6.2 Electron Configuration
[Xe] 4f14 5d7 6s2
[Xe] 4f7 5d1 6s2
6.3 Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
7464
Lithium Metal
3 117
6.4.2 Number of Neutrons
11093
Lithium Metal
4 184
6.4.3 Number of Electrons
7464
Lithium Metal
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
136.00 pm180.00 pm
Beryllium Metal
112 265
6.5.2 Covalent Radius
141.00 pm196.00 pm
Beryllium Metal
96 260
6.5.3 Van der Waals Radius
202.00 pm237.00 pm
Zinc Metal
139 348
6.6 Atomic Weight
192.22 amu47.87 amu
Lithium Metal
6.94 294
6.7 Atomic Volume
9.53 cm3/mol19.90 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
140.00 (-eV)46.10 (-eV)
Francium Metal
8 392.42
6.10 Lattice Constant
383.90 pm363.60 pm
Beryllium Metal
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
NA1.59
Beryllium Metal
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
22.56 g/cm37.90 g/cm3
Lithium Metal
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
19.00 g/cm37.40 g/cm3
Lithium Metal
0.512 20
7.2 Tensile Strength
2,000.00 MPaNA
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
NA0.00 (Pa)
Cerium Metal
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
0.00 (Pa)7.39 (Pa)
Tungsten Metal
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
210.00 GPa21.80 GPa
Potassium Metal
1.3 222
7.5.2 Bulk Modulus
320.00 GPa37.90 GPa
Cesium Metal
1.6 462
7.5.3 Young's Modulus
528.00 GPa54.80 GPa
Cesium Metal
1.7 528
7.6 Poisson Ratio
0.260.26
Beryllium Metal
0.032 0.47
7.7 Other Mechanical Properties
NA
Ductile, Malleable
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
21.787.90
Lithium Metal
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Ferromagnetic
8.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Conductor
8.2.2 Resistivity
47.10 nΩ·m1.31 nΩ·m
Thallium Metal
0.18 961
8.2.3 Electrical Conductivity
0.19 106/cm Ω0.01 106/cm Ω
Plutonium Metal
0.00666 0.63
8.2.4 Electron Affinity
151.00 kJ/mol50.00 kJ/mol
Mercury Metal
0 222.8
9 Thermal
9.1 Specific Heat
0.13 J/(kg K)0.23 J/(kg K)
Americium Metal
0.11 3.6
9.2 Molar Heat Capacity
25.10 J/mol·K37.03 J/mol·K
Beryllium Metal
16.443 62.7
9.3 Thermal Conductivity
147.00 W/m·K10.60 W/m·K
Neptunium Metal
6.3 429
9.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
9.5 Thermal Expansion
6.40 µm/(m·K)9.40 µm/(m·K)
Tungsten Metal
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
799.10 kJ/mol359.40 kJ/mol
Zinc Metal
7.32 799.1
9.6.2 Enthalpy of Fusion
35.23 kJ/mol10.05 kJ/mol
Cesium Metal
2.1 35.23
9.6.3 Enthalpy of Atomization
837.00 kJ/mol352.00 kJ/mol
Mercury Metal
61.5 837
9.7 Standard Molar Entropy
35.50 J/mol.K68.10 J/mol.K
Beryllium Metal
9.5 198.1