Magnesium

Samarium

Magnesium Samarium Comparison

Magnesium

Samarium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

2NA

0 17

1.4 Period Number

2 7

1.5 Block

s block

f block

1.6 Element Family

Alkaline Earth

Lanthanide

1.7 CAS Number

74399547440199

7429905 54386242

1.11 Space Group Name

P63/mmc

R_ 3m

1.12 Space Group Number

194.00166.00

11 229

2 Facts

2.1 Interesting Facts

Magnesium ions are present in every chlorophyll of every green plant .
Controlling Magnesium fire by pouring water on it will result in explosions.

Samarium metals helps stimulating body metabolism.
Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.

2.2 Sources

By Electrolysis Process, In Ocean, Mining

Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Joseph Black

Lecoq de Boisbaudran

2.3.2 Discovery

In 1755

In 1879

2.4 Abundance

2.4.1 Abundance In Universe

6 * 10^-2 %5 * 10^-7 %

5E-09 0.11

3.4.2 Abundance In Sun

~0.07 %~0.0000001 %

1E-08 0.1

3.4.3 Abundance In Meteorites

12.00 %0.00 %

1.7E-07 22

3.4.5 Abundance In Earth's Crust

2.90 %0.00 %

9.9E-12 8.1

3.4.7 Abundance In Oceans

0.13 %0.00 %

2E-23 1.1

3.4.8 Abundance In Humans

0.03 %NA

1E-13 1.4

4 Uses

4.1 Uses & Benefits

Magnesium aluminum alloy improves the mechanical strength and welding characteristics and hence it is used in aeroplane and car manufacturing.
It is also used to remove sulfur from the molten iron and steel.

Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.

Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.

4.1.1 Industrial Uses

Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Pharmaceutical Industry

Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry

4.1.2 Medical Uses

4.1.3 Other Uses

Surgical Instruments Manufacturing

Alloys, In Nuclear Reactors

4.2 Biological Properties

4.2.1 Toxicity

Non Toxic

Slightly Toxic

4.2.2 Present in Human Body

✔ ✘

4.2.3 In Blood

37.80 Blood/mg dm-30.01 Blood/mg dm-3

0 1970

4.2.5 In Bone

1,800.00 p.p.m.NA

0 170000

5 Physical

5.1 Melting Point

650.00 °C1,072.00 °C

27 3410

6.3 Boiling Point

1,107.00 °C1,900.00 °C

147 5660

6.4 Appearance

6.4.1 Physical State

Solid

6.4.2 Color

Gray

Silvery White

6.4.3 Luster

Lustrous

6.5 Hardness

6.5.1 Mohs Hardness

2.50NA

0.2 8.5

7.1.1 Brinell Hardness

260.00 MPa441.00 MPa

0.14 3490

7.2.1 Vickers Hardness

NA412.00 MPa

121 3430

7.3 Speed of Sound

4,940.00 m/s2,130.00 m/s

818 16200

7.6 Optical Properties

7.6.1 Refractive Index

NANA

1.000933 1.7229

7.6.3 Reflectivity

74.00 %NA

58 97

7.7 Allotropes

✔ ✘

7.7.1 α Allotropes

Not Available

7.7.2 β Allotropes

Not Available

7.7.3 γ Allotropes

Not Available

8 Chemical

8.1 Chemical Formula

8.2 Isotopes

8.2.1 Known Isotopes

1530

0 38

8.3 Electronegativity

8.3.1 Pauling Electronegativity

1.311.17

0.7 2.54

8.4.1 Sanderson Electronegativity

1.32NA

0.22 2.56

8.5.2 Allred Rochow Electronegativity

1.231.07

0.86 1.82

8.5.4 Mulliken-Jaffe Electronegativity

1.37NA

0.62 2.48

9.2.2 Allen Electronegativity

1.29NA

0.659 2.7

9.4 Electropositivity

9.4.1 Pauling Electropositivity

2.692.83

1.46 3.3

9.5 Ionization Energies

9.5.1 1st Energy Level

737.70 kJ/mol544.50 kJ/mol

375.7 26130

9.5.3 2nd Energy Level

1,450.70 kJ/mol1,070.00 kJ/mol

710.2162 28750

9.5.5 3rd Energy Level

7,732.70 kJ/mol2,260.00 kJ/mol

1600 34230

9.5.7 4th Energy Level

10,542.50 kJ/mol3,990.00 kJ/mol

2780 37066

9.5.8 5th Energy Level

13,630.00 kJ/molNA

4305.2 97510

9.5.10 6th Energy Level

18,020.00 kJ/molNA

5715.8 105800

9.5.11 7th Energy level

21,711.00 kJ/molNA

7226.8 114300

9.6.2 8th Energy Level

25,661.00 kJ/molNA

8857.4 125300

9.7.2 9th Energy Level

31,653.00 kJ/molNA

14110 134700

9.7.4 10th Energy Level

35,458.00 kJ/molNA

17100 144300

9.7.6 11th Energy Level

169,988.00 kJ/molNA

19900 169988

9.7.7 12th Energy Level

189,368.00 kJ/molNA

22219 189368

9.7.9 13th Energy Level

NANA

26930 76015

9.7.11 14th Energy Level

NANA

29196 86450

9.7.13 15th Energy Level

NANA

41987 97510

9.7.15 16th Energy Level

NANA

47206 109480

9.7.17 17th Energy Level

NANA

52737 122200

9.7.18 18th Energy Level

NANA

58570 134810

9.7.20 19th Energy Level

NANA

64702 148700

9.7.22 20th Energy Level

NANA

80400 171200

9.7.24 21st Energy Level

NANA

87000 179100

9.7.25 22nd Energy Level

NANA

93400 184900

9.7.27 23rd Energy Level

NANA

98420 198800

9.7.28 24th Energy Level

NANA

104400 195200

9.7.30 25th Energy Level

NANA

121900 121900

9.7.31 26th Energy Level

NANA

127700 127700

9.7.33 27th Energy Level

NANA

133800 133800

9.7.34 28th Energy Level

NANA

139800 139800

9.7.36 29th Energy Level

NANA

148100 148100

9.7.38 30th Energy Level

NANA

154500 154500

9.8 Electrochemical Equivalent

0.45 g/amp-hr1.87 g/amp-hr

0.16812 8.3209

9.9 Electron Work Function

3.66 eV2.70 eV

2.14 5.65

9.10 Other Chemical Properties

Corrosion, Highly Inflammable, Ionization, Solubility

Ionization, Radioactive Isotopes

10 Atomic

10.1 Atomic Number

1262

3 117

10.2 Electron Configuration

[Ne] 3s²

[Xe] 4f⁶ 6s²

10.3 Crystal Structure

Hexagonal Close Packed (HCP)

Rhombohedral (RHO)

10.3.1 Crystal Lattice

10.4 Atom

10.4.1 Number of Protons

1262

3 117

10.4.4 Number of Neutrons

1288

4 184

10.4.6 Number of Electrons

1262

3 117

10.5 Radius of an Atom

10.5.1 Atomic Radius

160.00 pm180.00 pm

112 265

10.5.3 Covalent Radius

141.00 pm198.00 pm

96 260

10.5.5 Van der Waals Radius

173.00 pm229.00 pm

139 348

10.6 Atomic Weight

24.31 amu150.36 amu

6.94 294

10.7 Atomic Volume

13.97 cm3/mol19.95 cm3/mol

1.39 71.07

10.9 Adjacent Atomic Numbers

10.9.1 Previous Element

10.9.2 Next Element

10.10 Valence Electron Potential

40.00 (-eV)44.80 (-eV)

8 392.42

10.12 Lattice Constant

320.94 pm362.10 pm

228.58 891.25

11.2 Lattice Angles

π/2, π/2, 2 π/3

11.3 Lattice C/A Ratio

NANA

1.567 1.886

12 Mechanical

12.1 Density

12.1.1 Density At Room Temperature

1.74 g/cm³7.52 g/cm³

0.534 40.7

12.4.2 Density When Liquid (at m.p.)

1.58 g/cm37.16 g/cm3

0.512 20

12.5 Tensile Strength

NANA

2.5 11000

12.6 Viscosity

NANA

0.001526 0.001526

12.7 Vapor Pressure

12.7.1 Vapor Pressure at 1000 K

NA0.94 (Pa)

2.47E-11 121

12.8.2 Vapor Pressure at 2000 K

NANA

2.62E-10 774

12.9 Elasticity properties

12.9.1 Shear Modulus

17.00 GPa19.50 GPa

1.3 222

12.9.3 Bulk Modulus

45.00 GPa37.80 GPa

1.6 462

12.10.1 Young's Modulus

45.00 GPa49.70 GPa

1.7 528

12.12 Poisson Ratio

0.290.27

0.032 0.47

12.13 Other Mechanical Properties

13 Magnetic

13.1 Magnetic Characteristics

13.1.1 Specific Gravity

1.747.52

0.53 4500

13.3.1 Magnetic Ordering

Paramagnetic

13.3.2 Permeability

NANA

1.25643E-06 0.0063

13.4.1 Susceptibility

NANA

-0.000166 200000

13.5 Electrical Properties

13.5.1 Electrical Property

Conductor

13.5.2 Resistivity

43.90 nΩ·m0.94 nΩ·m

0.18 961

14.1.2 Electrical Conductivity

0.23 10⁶/cm Ω0.01 10⁶/cm Ω

0.00666 0.63

14.1.4 Electron Affinity

0.00 kJ/mol50.00 kJ/mol

0 222.8

15 Thermal

15.1 Specific Heat

1.02 J/(kg K)0.20 J/(kg K)

0.11 3.6

15.3 Molar Heat Capacity

24.87 J/mol·K29.54 J/mol·K

16.443 62.7

15.6 Thermal Conductivity

156.00 W/m·K13.30 W/m·K

6.3 429

15.7 Critical Temperature

NANA

26.3 3223

15.9 Thermal Expansion

24.80 µm/(m·K)12.70 µm/(m·K)

4.5 97

15.10 Enthalpy

15.10.1 Enthalpy of Vaporization

128.70 kJ/mol166.40 kJ/mol

7.32 799.1

15.10.3 Enthalpy of Fusion

8.95 kJ/mol8.62 kJ/mol

2.1 35.23

15.10.5 Enthalpy of Atomization

148.50 kJ/mol209.00 kJ/mol

61.5 837

15.12 Standard Molar Entropy

32.70 J/mol.K69.60 J/mol.K

9.5 198.1

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Magnesium vs Aluminium

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