What is Bohrium?

Bohrium

Periodic Table

Symbol

Group Number

7 11

Period Number

7 1

Block

d block

Element Family

Transition Metal

CAS Number

54037148 12

Space Group Name

Space Group Number

276.00 1

Facts

Interesting Facts

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

Sources

Found in Minerals, Mining, Synthetically Produced

History

Who Discovered

Gesellschaft für Schwerionenforschung

Discovery

In 1981

Abundance

Abundance In Universe

0.00 % 37

Abundance In Sun

Abundance In Meteorites

0.00 % 54

Abundance In Earth's Crust

0.00 % 61

Abundance In Oceans

Abundance In Humans

Uses

Uses & Benefits

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

Industrial Uses

Medical Uses

Other Uses

Research Purposes

Biological Properties

Toxicity

Present in Human Body

In Blood

0.00 Blood/mg dm-3 40

In Bone

0.00 p.p.m. 41

Physical

Melting Point

Boiling Point

0.00 °C 82

Appearance

Physical State

Solid

Color

Luster

Unknown Luster

Hardness

Mohs Hardness

7.00 3

Brinell Hardness

270.00 MPa 42

Vickers Hardness

2,700.00 MPa 4

Speed of Sound

2,680.00 m/s 48

Optical Properties

Refractive Index

1.50 36

Reflectivity

59.00 % 24

Allotropes

α Allotropes

β Allotropes

γ Allotropes

Chemical

Chemical Formula

Isotopes

Known Isotopes

5 32

Electronegativity

Pauling Electronegativity

2.00 8

Sanderson Electronegativity

1.30 25

Allred Rochow Electronegativity

1.30 25

Mulliken-Jaffe Electronegativity

1.30 33

Allen Electronegativity

2.00 6

Electropositivity

Pauling Electropositivity

2.00 47

Ionization Energies

1st Energy Level

742.90 kJ/mol 23

2nd Energy Level

1,688.50 kJ/mol 31

3rd Energy Level

2,566.50 kJ/mol 45

4th Energy Level

3,598.90 kJ/mol 63

5th Energy Level

4,727.80 kJ/mol 80

6th Energy Level

5,991.70 kJ/mol 59

7th Energy level

7,226.80 kJ/mol 34

8th Energy Level

7,100.00 kJ/mol 33

9th Energy Level

5,800.00 kJ/mol 56

10th Energy Level

7,100.00 kJ/mol 35

11th Energy Level

8,200.00 kJ/mol 25

12th Energy Level

82,700.00 kJ/mol 4

13th Energy Level

7,100.00 kJ/mol 29

14th Energy Level

8,200.00 kJ/mol 17

15th Energy Level

82,000.00 kJ/mol 14

16th Energy Level

71,100.00 kJ/mol 20

17th Energy Level

820.00 kJ/mol 31

18th Energy Level

8,200.00 kJ/mol 20

19th Energy Level

820.80 kJ/mol 28

20th Energy Level

820.00 kJ/mol 21

21st Energy Level

8,200.00 kJ/mol 11

22nd Energy Level

820.00 kJ/mol 16

23rd Energy Level

8,200.00 kJ/mol 8

24th Energy Level

820.00 kJ/mol 12

25th Energy Level

820.00 kJ/mol 10

26th Energy Level

820.00 kJ/mol 10

27th Energy Level

820.00 kJ/mol 9

28th Energy Level

820.00 kJ/mol 15

29th Energy Level

820.00 kJ/mol 14

30th Energy Level

820.00 kJ/mol 10

Electrochemical Equivalent

3.00 g/amp-hr 21

Electron Work Function

4.90 eV 12

Other Chemical Properties

Ionization, Radioactive Isotopes

Atomic

Atomic Number

107 11

Electron Configuration

[Rn] 5f¹⁴ 6d⁵ 7s²

Crystal Structure

Hexagonal Close Packed (HCP)

Crystal Lattice

BCC-Crystal-Structure-.jpg#100

Atom

Number of Protons

107 11

Number of Neutrons

155 9

Number of Electrons

107 11

Radius of an Atom

Atomic Radius

128.00 pm 48

Covalent Radius

141.00 pm 45

Van der Waals Radius

0.00 pm 53

Atomic Weight

270.00 amu 8

Atomic Volume

23.70 cm3/mol 14

Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

27.20 (-eV) 57

Lattice Constant

Lattice Angles

Lattice C/A Ratio

1.57 41

Mechanical

Density

Density At Room Temperature

37.10 g/cm³ 3

Density When Liquid (at m.p.)

37.10 g/cm3 3

Tensile Strength

152.00 MPa 24

Viscosity

0.00 25

Vapor Pressure

Vapor Pressure at 1000 K

0.00 (Pa) 37

Vapor Pressure at 2000 K

0.00 (Pa) 37

Elasticity properties

Shear Modulus

28.00 GPa 32

Bulk Modulus

37.00 GPa 45

Young's Modulus

0.00 GPa 74

Poisson Ratio

0.35 9

Other Mechanical Properties

Magnetic

Magnetic Characteristics

Specific Gravity

37.00 5

Magnetic Ordering

Permeability

0.00 H/m 11

Susceptibility

0.00 24

Electrical Properties

Electrical Property

Resistivity

6.50 nΩ·m 58

Electrical Conductivity

0.00 10⁶/cm Ω 71

Electron Affinity

Thermal

Specific Heat

0.10 J/(kg K) 44

Molar Heat Capacity

37.10 J/mol·K 2

Thermal Conductivity

37.00 W/m·K 36

Critical Temperature

1,323.00 K 47

Thermal Expansion

14.30 µm/(m·K) 28

Enthalpy

Enthalpy of Vaporization

270.50 kJ/mol 55

Enthalpy of Fusion

Enthalpy of Atomization

Standard Molar Entropy

57.00 J/mol.K 30

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