Lanthanum

Manganese

Lanthanum Manganese Comparison

Lanthanum

Manganese

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1 Periodic Table

1.1 Symbol

1.2 Group Number

NA7

0 17

1.3 Period Number

2 7

1.4 Block

f block

d block

1.5 Element Family

Lanthanide

Transition Metal

1.6 CAS Number

74399107439965

7429905 54386242

1.7 Space Group Name

P63/mmc

I_ 43m

1.8 Space Group Number

194.00217.00

11 229

2 Facts

2.1 Interesting Facts

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

Manganese is an essential trace element in all forms of life.
Manganese metal oxidizes very easily, but it does not fuse that easily.

2.2 Sources

Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Carl Gustaf Mosander

Johann Gottlieb Gahn

2.3.2 Discovery

In 1838

In 1774

2.4 Abundance

2.4.1 Abundance In Universe

2 * 10^-7 %8 * 10^-4 %

5E-09 0.11

2.4.2 Abundance In Sun

~0.0000002 %~0.001 %

1E-08 0.1

2.4.3 Abundance In Meteorites

0.00 %0.27 %

1.7E-07 22

2.4.4 Abundance In Earth's Crust

0.00 %0.11 %

9.9E-12 8.1

2.4.5 Abundance In Oceans

0.00 %0.00 %

2E-23 1.1

2.4.6 Abundance In Humans

NA0.00 %

1E-13 1.4

3 Uses

3.1 Uses & Benefits

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.

This metal is very brittle hence it mostly not used as a pure metal, but its alloys are very useful
Its alloy Manganese steel is extremely strong and used in railway tracks, safes, prison bars and riffle barrels.

3.1.1 Industrial Uses

Electrical Industry, Electronic Industry

Automobile Industry, Electrical Industry, Electronic Industry

3.1.2 Medical Uses

3.1.3 Other Uses

Alloys, Mirror Manufacturing

Alloys

3.2 Biological Properties

3.2.1 Toxicity

Low Toxic

Toxic

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

NA0.08 Blood/mg dm-3

0 1970

3.2.4 In Bone

0.08 p.p.m.100.00 p.p.m.

0 170000

4 Physical

4.1 Melting Point

920.00 °C1,245.00 °C

27 3410

4.2 Boiling Point

3,469.00 °C1,962.00 °C

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Silvery White

Silver

4.3.3 Luster

Metallic

4.4 Hardness

4.4.1 Mohs Hardness

2.506.00

0.2 8.5

4.4.2 Brinell Hardness

350.00 MPa196.00 MPa

0.14 3490

4.4.3 Vickers Hardness

360.00 MPaNA

121 3430

4.5 Speed of Sound

2,475.00 m/s5,150.00 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

3121

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

1.101.55

0.7 2.54

5.3.2 Sanderson Electronegativity

NA2.20

0.22 2.56

5.3.3 Allred Rochow Electronegativity

1.081.60

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

NANA

0.62 2.48

5.3.5 Allen Electronegativity

NA1.75

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

2.902.45

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

538.10 kJ/mol717.30 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

1,067.00 kJ/mol1,509.00 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

1,850.30 kJ/mol3,248.00 kJ/mol

1600 34230

5.5.4 4th Energy Level

4,819.00 kJ/mol4,940.00 kJ/mol

2780 37066

5.5.5 5th Energy Level

5,940.00 kJ/mol6,990.00 kJ/mol

4305.2 97510

5.5.6 6th Energy Level

NA9,220.00 kJ/mol

5715.8 105800

5.5.7 7th Energy level

NA11,500.00 kJ/mol

7226.8 114300

5.5.8 8th Energy Level

NA18,770.00 kJ/mol

8857.4 125300

5.5.9 9th Energy Level

NA21,400.00 kJ/mol

14110 134700

5.5.10 10th Energy Level

NA23,960.00 kJ/mol

17100 144300

5.5.11 11th Energy Level

NA27,590.00 kJ/mol

19900 169988

5.5.12 12th Energy Level

NA30,330.00 kJ/mol

22219 189368

5.5.13 13th Energy Level

NA33,150.00 kJ/mol

26930 76015

5.5.14 14th Energy Level

NA38,880.00 kJ/mol

29196 86450

5.5.15 15th Energy Level

NA41,987.00 kJ/mol

41987 97510

5.5.16 16th Energy Level

NA109,480.00 kJ/mol

47206 109480

5.5.17 17th Energy Level

NA118,100.00 kJ/mol

52737 122200

5.5.18 18th Energy Level

NA127,100.00 kJ/mol

58570 134810

5.5.19 19th Energy Level

NA138,600.00 kJ/mol

64702 148700

5.5.20 20th Energy Level

NA148,500.00 kJ/mol

80400 171200

5.5.21 21st Energy Level

NA158,600.00 kJ/mol

87000 179100

5.5.22 22nd Energy Level

NA172,500.00 kJ/mol

93400 184900

5.5.23 23rd Energy Level

NA181,380.00 kJ/mol

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

1.73 g/amp-hr0.29 g/amp-hr

0.16812 8.3209

5.7 Electron Work Function

3.50 eV4.10 eV

2.14 5.65

5.8 Other Chemical Properties

Ionization, Radioactive Isotopes, Solubility

Ionization, Radioactive Isotopes

6 Atomic

6.1 Atomic Number

5725

3 117

6.2 Electron Configuration

[Xe] 5d² 6s²

[Ar] 3d⁵ 4s²

6.3 Crystal Structure

Double Hexagonal Close Packed (DHCP)

Body Centered Cubic (BCC)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

5725

3 117

6.4.2 Number of Neutrons

8230

4 184

6.4.3 Number of Electrons

5725

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

187.00 pm127.00 pm

112 265

6.5.2 Covalent Radius

207.00 pm139.00 pm

96 260

6.5.3 Van der Waals Radius

240.00 pm200.00 pm

139 348

6.6 Atomic Weight

138.91 amu54.94 amu

6.94 294

6.7 Atomic Volume

20.73 cm3/mol1.39 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

40.71 (-eV)220.00 (-eV)

8 392.42

6.10 Lattice Constant

377.20 pm891.25 pm

228.58 891.25

6.11 Lattice Angles

π/2, π/2, 2 π/3

π/2, π/2, π/2

6.12 Lattice C/A Ratio

1.62NA

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

6.16 g/cm³7.21 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

5.94 g/cm35.95 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

NA0.00 (Pa)

2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

0.98 (Pa)NA

2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

14.30 GPaNA

1.3 222

7.5.2 Bulk Modulus

27.90 GPa120.00 GPa

1.6 462

7.5.3 Young's Modulus

36.60 GPa198.00 GPa

1.7 528

7.6 Poisson Ratio

0.28NA

0.032 0.47

7.7 Other Mechanical Properties

Ductile

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

6.177.21

0.53 4500

8.1.2 Magnetic Ordering

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

Conductor

8.2.2 Resistivity

615.00 nΩ·m1.44 nΩ·m

0.18 961

8.2.3 Electrical Conductivity

0.01 10⁶/cm Ω0.01 10⁶/cm Ω

0.00666 0.63

8.2.4 Electron Affinity

48.00 kJ/mol0.00 kJ/mol

0 222.8

9 Thermal

9.1 Specific Heat

0.19 J/(kg K)0.48 J/(kg K)

0.11 3.6

9.2 Molar Heat Capacity

27.11 J/mol·K26.32 J/mol·K

16.443 62.7

9.3 Thermal Conductivity

13.40 W/m·K7.81 W/m·K

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

12.10 µm/(m·K)21.70 µm/(m·K)

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

399.60 kJ/mol219.70 kJ/mol

7.32 799.1

9.6.2 Enthalpy of Fusion

6.20 kJ/mol14.64 kJ/mol

2.1 35.23

9.6.3 Enthalpy of Atomization

431.00 kJ/mol280.30 kJ/mol

61.5 837

9.7 Standard Molar Entropy

56.90 J/mol.K32.00 J/mol.K

9.5 198.1

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