Iridium

Bohrium

Iridium vs Bohrium

Iridium

Bohrium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

0 17

1.3 Period Number

2 7

1.4 Block

d block

1.5 Element Family

Transition Metal

1.6 CAS Number

743988554037148

7429905 54386242

1.7 Space Group Name

Fm_ 3m

Not Available

1.8 Space Group Number

225.00NA

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 .

Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).

2.2 Sources

Found in Minerals, Mining, Ores of Minerals

Found in Minerals, Mining, Synthetically Produced

2.3 History

2.3.1 Who Discovered

Smithson Tennant

Gesellschaft für Schwerionenforschung

2.3.2 Discovery

In 1803

In 1981

2.4 Abundance

2.4.1 Abundance In Universe

2 * 10^-7 %NA

5E-09 0.11

2.4.2 Abundance In Sun

~0.0000002 %~-9999 %

1E-08 0.1

2.4.3 Abundance In Meteorites

0.00 %NA

1.7E-07 22

2.4.4 Abundance In Earth's Crust

0.00 %NA

9.9E-12 8.1

2.4.5 Abundance In Oceans

NANA

2E-23 1.1

2.4.6 Abundance In Humans

NANA

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.

Currently known uses of Bohrium metal are limited to research purpose only.

3.1.1 Industrial Uses

Automobile Industry, Electrical Industry, Electronic Industry

3.1.2 Medical Uses

3.1.3 Other Uses

Alloys

Research Purposes

3.2 Biological Properties

3.2.1 Toxicity

Toxic

Unknown

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

NA0.00 Blood/mg dm-3

0 1970

3.2.4 In Bone

NA0.00 p.p.m.

0 170000

4 Physical

4.1 Melting Point

2,410.00 °CNA

27 3410

4.2 Boiling Point

4,527.00 °CNA

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Silvery White

Unknown

4.3.3 Luster

Metallic

Unknown Luster

4.4 Hardness

4.4.1 Mohs Hardness

6.50NA

0.2 8.5

4.4.2 Brinell Hardness

1,670.00 MPaNA

0.14 3490

4.4.3 Vickers Hardness

1,760.00 MPaNA

121 3430

4.5 Speed of Sound

4,825.00 m/sNA

818 16200

4.6 Optical Properties

4.6.1 Refractive Index

NANA

1.000933 1.7229

4.6.2 Reflectivity

78.00 %NA

58 97

4.7 Allotropes

✔ ✘

4.7.1 α Allotropes

Not Available

4.7.2 β Allotropes

Not Available

4.7.3 γ Allotropes

Not Available

5 Chemical

5.1 Chemical Formula

5.2 Isotopes

5.2.1 Known Isotopes

345

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

2.20NA

0.7 2.54

5.3.2 Sanderson Electronegativity

NANA

0.22 2.56

5.3.3 Allred Rochow Electronegativity

1.55NA

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

NANA

0.62 2.48

5.3.5 Allen Electronegativity

1.68NA

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

1.80NA

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

880.00 kJ/mol742.90 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

1,600.00 kJ/mol1,688.50 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

NA2,566.50 kJ/mol

1600 34230

5.5.4 4th Energy Level

NA3,598.90 kJ/mol

2780 37066

5.5.5 5th Energy Level

NA4,727.80 kJ/mol

4305.2 97510

5.5.6 6th Energy Level

NA5,991.70 kJ/mol

5715.8 105800

5.5.7 7th Energy level

NA7,226.80 kJ/mol

7226.8 114300

5.5.8 8th Energy Level

NANA

8857.4 125300

5.5.9 9th Energy Level

NANA

14110 134700

5.5.10 10th Energy Level

NANA

17100 144300

5.5.11 11th Energy Level

NANA

19900 169988

5.5.12 12th Energy Level

NANA

22219 189368

5.5.13 13th Energy Level

NANA

26930 76015

5.5.14 14th Energy Level

NANA

29196 86450

5.5.15 15th Energy Level

NANA

41987 97510

5.5.16 16th Energy Level

NANA

47206 109480

5.5.17 17th Energy Level

NANA

52737 122200

5.5.18 18th Energy Level

NANA

58570 134810

5.5.19 19th Energy Level

NANA

64702 148700

5.5.20 20th Energy Level

NANA

80400 171200

5.5.21 21st Energy Level

NANA

87000 179100

5.5.22 22nd Energy Level

NANA

93400 184900

5.5.23 23rd Energy Level

NANA

98420 198800

5.5.24 24th Energy Level

NANA

104400 195200

5.5.25 25th Energy Level

NANA

121900 121900

5.5.26 26th Energy Level

NANA

127700 127700

5.5.27 27th Energy Level

NANA

133800 133800

5.5.28 28th Energy Level

NANA

139800 139800

5.5.29 29th Energy Level

NANA

148100 148100

5.5.30 30th Energy Level

NANA

154500 154500

5.6 Electrochemical Equivalent

1.14 g/amp-hrNA

0.16812 8.3209

5.7 Electron Work Function

4.55 eVNA

2.14 5.65

5.8 Other Chemical Properties

Flammable, Ionization, Radioactive Isotopes, Radioactivity

Ionization, Radioactive Isotopes

6 Atomic

6.1 Atomic Number

77107

3 117

6.2 Electron Configuration

[Xe] 4f¹⁴ 5d⁷ 6s²

[Rn] 5f¹⁴ 6d⁵ 7s²

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

74107

3 117

6.4.2 Number of Neutrons

110155

4 184

6.4.3 Number of Electrons

74107

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

136.00 pm128.00 pm

112 265

6.5.2 Covalent Radius

141.00 pm141.00 pm

96 260

6.5.3 Van der Waals Radius

202.00 pmNA

139 348

6.6 Atomic Weight

192.22 amu270.00 amu

6.94 294

6.7 Atomic Volume

9.53 cm3/molNA

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)NA

8 392.42

6.10 Lattice Constant

383.90 pmNA

228.58 891.25

6.11 Lattice Angles

π/2, π/2, π/2

6.12 Lattice C/A Ratio

NANA

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

22.56 g/cm³37.10 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

19.00 g/cm3NA

0.512 20

7.2 Tensile Strength

2,000.00 MPaNA

2.5 11000

7.3 Viscosity

NANA

0.001526 0.001526

7.4 Vapor Pressure

7.4.1 Vapor Pressure at 1000 K

NANA

2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

0.00 (Pa)NA

2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

210.00 GPaNA

1.3 222

7.5.2 Bulk Modulus

320.00 GPaNA

1.6 462

7.5.3 Young's Modulus

528.00 GPaNA

1.7 528

7.6 Poisson Ratio

0.26NA

0.032 0.47

7.7 Other Mechanical Properties

Unknown

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

21.78NA

0.53 4500

8.1.2 Magnetic Ordering

Paramagnetic

Unknown

8.1.3 Permeability

NANA

1.25643E-06 0.0063

8.1.4 Susceptibility

NANA

-0.000166 200000

8.2 Electrical Properties

8.2.1 Electrical Property

Conductor

Unknown

8.2.2 Resistivity

47.10 nΩ·mNA

0.18 961

8.2.3 Electrical Conductivity

0.19 10⁶/cm ΩNA

0.00666 0.63

8.2.4 Electron Affinity

151.00 kJ/molNA

0 222.8

9 Thermal

9.1 Specific Heat

0.13 J/(kg K)NA

0.11 3.6

9.2 Molar Heat Capacity

25.10 J/mol·KNA

16.443 62.7

9.3 Thermal Conductivity

147.00 W/m·KNA

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

6.40 µm/(m·K)NA

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

799.10 kJ/molNA

7.32 799.1

9.6.2 Enthalpy of Fusion

35.23 kJ/molNA

2.1 35.23

9.6.3 Enthalpy of Atomization

837.00 kJ/molNA

61.5 837

9.7 Standard Molar Entropy

35.50 J/mol.KNA

9.5 198.1

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