Bohrium

Lanthanum

Bohrium vs Lanthanum

Bohrium

Lanthanum

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1 Periodic Table

1.1 Symbol

1.2 Group Number

7NA

0 17

1.3 Period Number

2 7

1.4 Block

d block

f block

1.5 Element Family

Transition Metal

Lanthanide

1.6 CAS Number

540371487439910

7429905 54386242

1.7 Space Group Name

Not Available

P63/mmc

1.8 Space Group Number

NA194.00

11 229

2 Facts

2.1 Interesting Facts

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

Lanthanum metal is highly malleable, ductile and sectile.
If exposed to air Lanthanum metal oxidizes rapidly.

2.2 Sources

Found in Minerals, Mining, Synthetically Produced

Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Gesellschaft für Schwerionenforschung

Carl Gustaf Mosander

2.3.2 Discovery

In 1981

In 1838

2.4 Abundance

2.4.1 Abundance In Universe

NA2 * 10^-7 %

5E-09 0.11

2.4.2 Abundance In Sun

~-9999 %~0.0000002 %

1E-08 0.1

2.4.3 Abundance In Meteorites

NA0.00 %

1.7E-07 22

2.4.4 Abundance In Earth's Crust

NA0.00 %

9.9E-12 8.1

2.4.5 Abundance In Oceans

NA0.00 %

2E-23 1.1

2.4.6 Abundance In Humans

NANA

1E-13 1.4

3 Uses

3.1 Uses & Benefits

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

It has no commercial uses, but its alloys are in high demand. Lanthanum and Nickel alloy is used for the hydrogen gas storage.
The best-known use for mischmetal alloy of Lanthanum is; as a ‘flints’ for cigarette lighters.

3.1.1 Industrial Uses

Electrical Industry, Electronic Industry

3.1.2 Medical Uses

3.1.3 Other Uses

Research Purposes

Alloys, Mirror Manufacturing

3.2 Biological Properties

3.2.1 Toxicity

Unknown

Low Toxic

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

0.00 Blood/mg dm-3NA

0 1970

3.2.4 In Bone

0.00 p.p.m.0.08 p.p.m.

0 170000

4 Physical

4.1 Melting Point

NA920.00 °C

27 3410

4.2 Boiling Point

NA3,469.00 °C

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Unknown

Silvery White

4.3.3 Luster

Unknown Luster

4.4 Hardness

4.4.1 Mohs Hardness

NA2.50

0.2 8.5

4.4.2 Brinell Hardness

NA350.00 MPa

0.14 3490

4.4.3 Vickers Hardness

NA360.00 MPa

121 3430

4.5 Speed of Sound

NA2,475.00 m/s

818 16200

4.6 Optical Properties

4.6.1 Refractive Index

NANA

1.000933 1.7229

4.6.2 Reflectivity

NANA

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

531

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

NA1.10

0.7 2.54

5.3.2 Sanderson Electronegativity

NANA

0.22 2.56

5.3.3 Allred Rochow Electronegativity

NA1.08

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

NANA

0.62 2.48

5.3.5 Allen Electronegativity

NANA

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

NA2.90

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

742.90 kJ/mol538.10 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

1,688.50 kJ/mol1,067.00 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

2,566.50 kJ/mol1,850.30 kJ/mol

1600 34230

5.5.4 4th Energy Level

3,598.90 kJ/mol4,819.00 kJ/mol

2780 37066

5.5.5 5th Energy Level

4,727.80 kJ/mol5,940.00 kJ/mol

4305.2 97510

5.5.6 6th Energy Level

5,991.70 kJ/molNA

5715.8 105800

5.5.7 7th Energy level

7,226.80 kJ/molNA

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

NA1.73 g/amp-hr

0.16812 8.3209

5.7 Electron Work Function

NA3.50 eV

2.14 5.65

5.8 Other Chemical Properties

Ionization, Radioactive Isotopes

Ionization, Radioactive Isotopes, Solubility

6 Atomic

6.1 Atomic Number

10757

3 117

6.2 Electron Configuration

[Rn] 5f¹⁴ 6d⁵ 7s²

[Xe] 5d² 6s²

6.3 Crystal Structure

Hexagonal Close Packed (HCP)

Double Hexagonal Close Packed (DHCP)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

10757

3 117

6.4.2 Number of Neutrons

15582

4 184

6.4.3 Number of Electrons

10757

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

128.00 pm187.00 pm

112 265

6.5.2 Covalent Radius

141.00 pm207.00 pm

96 260

6.5.3 Van der Waals Radius

NA240.00 pm

139 348

6.6 Atomic Weight

270.00 amu138.91 amu

6.94 294

6.7 Atomic Volume

NA20.73 cm3/mol

1.39 71.07

6.8 Adjacent Atomic Numbers

6.8.1 Previous Element

6.8.2 Next Element

6.9 Valence Electron Potential

NA40.71 (-eV)

8 392.42

6.10 Lattice Constant

NA377.20 pm

228.58 891.25

6.11 Lattice Angles

π/2, π/2, 2 π/3

6.12 Lattice C/A Ratio

NA1.62

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

37.10 g/cm³6.16 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

NA5.94 g/cm3

0.512 20

7.2 Tensile Strength

NANA

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

NA0.98 (Pa)

2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

NA14.30 GPa

1.3 222

7.5.2 Bulk Modulus

NA27.90 GPa

1.6 462

7.5.3 Young's Modulus

NA36.60 GPa

1.7 528

7.6 Poisson Ratio

NA0.28

0.032 0.47

7.7 Other Mechanical Properties

Unknown

Ductile

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

NA6.17

0.53 4500

8.1.2 Magnetic Ordering

Unknown

Paramagnetic

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

Unknown

Conductor

8.2.2 Resistivity

NA615.00 nΩ·m

0.18 961

8.2.3 Electrical Conductivity

NA0.01 10⁶/cm Ω

0.00666 0.63

8.2.4 Electron Affinity

NA48.00 kJ/mol

0 222.8

9 Thermal

9.1 Specific Heat

NA0.19 J/(kg K)

0.11 3.6

9.2 Molar Heat Capacity

NA27.11 J/mol·K

16.443 62.7

9.3 Thermal Conductivity

NA13.40 W/m·K

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

NA12.10 µm/(m·K)

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

NA399.60 kJ/mol

7.32 799.1

9.6.2 Enthalpy of Fusion

NA6.20 kJ/mol

2.1 35.23

9.6.3 Enthalpy of Atomization

NA431.00 kJ/mol

61.5 837

9.7 Standard Molar Entropy

NA56.90 J/mol.K

9.5 198.1

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