Gold

Magnesium

Gold vs Magnesium

Gold

Magnesium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

112

0 17

1.3 Period Number

2 7

1.4 Block

d block

s block

1.5 Element Family

Transition Metal

Alkaline Earth

1.6 CAS Number

74405757439954

7429905 54386242

1.7 Space Group Name

Fm_ 3m

P63/mmc

1.8 Space Group Number

225.00194.00

11 229

2 Facts

2.1 Interesting Facts

It is found in copper ores and from the crust of the earth.

It is the most malleable and ductile metal.

Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.

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

2.2 Sources

Earth's crust, Mining, Ores of metals

By Electrolysis Process, In Ocean, Mining

2.3 History

2.3.1 Who Discovered

Unknown

Joseph Black

2.3.2 Discovery

Before 6000 BCE

In 1755

2.4 Abundance

2.4.1 Abundance In Universe

6 * 10^-8 %6 * 10^-2 %

5E-09 0.11

2.4.2 Abundance In Sun

~0.0000001 %~0.07 %

1E-08 0.1

2.4.3 Abundance In Meteorites

0.00 %12.00 %

1.7E-07 22

2.4.4 Abundance In Earth's Crust

0.00 %2.90 %

9.9E-12 8.1

2.4.5 Abundance In Oceans

0.00 %0.13 %

2E-23 1.1

2.4.6 Abundance In Humans

0.00 %0.03 %

1E-13 1.4

3 Uses

3.1 Uses & Benefits

Gold metal is mainly used for Jewelry, bullion, coinage, etc.
It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.

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.

3.1.1 Industrial Uses

Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry

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

3.1.2 Medical Uses

Dentistry, Pharmaceutical Industry

3.1.3 Other Uses

Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues

Surgical Instruments Manufacturing

3.2 Biological Properties

3.2.1 Toxicity

Non Toxic

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

0.00 Blood/mg dm-337.80 Blood/mg dm-3

0 1970

3.2.4 In Bone

0.02 p.p.m.1,800.00 p.p.m.

0 170000

4 Physical

4.1 Melting Point

1,064.43 °C650.00 °C

27 3410

4.2 Boiling Point

2,807.00 °C1,107.00 °C

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Gold

Gray

4.3.3 Luster

Metallic

4.4 Hardness

4.4.1 Mohs Hardness

2.502.50

0.2 8.5

4.4.2 Brinell Hardness

194.00 MPa260.00 MPa

0.14 3490

4.4.3 Vickers Hardness

216.00 MPaNA

121 3430

4.5 Speed of Sound

2,030.00 m/s4,940.00 m/s

818 16200

4.6 Optical Properties

4.6.1 Refractive Index

NANA

1.000933 1.7229

4.6.2 Reflectivity

95.00 %74.00 %

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

3615

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

2.541.31

0.7 2.54

5.3.2 Sanderson Electronegativity

NA1.32

0.22 2.56

5.3.3 Allred Rochow Electronegativity

1.421.23

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

1.871.37

0.62 2.48

5.3.5 Allen Electronegativity

1.921.29

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

1.462.69

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

890.10 kJ/mol737.70 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

1,980.00 kJ/mol1,450.70 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

NA7,732.70 kJ/mol

1600 34230

5.5.4 4th Energy Level

NA10,542.50 kJ/mol

2780 37066

5.5.5 5th Energy Level

NA13,630.00 kJ/mol

4305.2 97510

5.5.6 6th Energy Level

NA18,020.00 kJ/mol

5715.8 105800

5.5.7 7th Energy level

NA21,711.00 kJ/mol

7226.8 114300

5.5.8 8th Energy Level

NA25,661.00 kJ/mol

8857.4 125300

5.5.9 9th Energy Level

NA31,653.00 kJ/mol

14110 134700

5.5.10 10th Energy Level

NA35,458.00 kJ/mol

17100 144300

5.5.11 11th Energy Level

NA169,988.00 kJ/mol

19900 169988

5.5.12 12th Energy Level

NA189,368.00 kJ/mol

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

2.45 g/amp-hr0.45 g/amp-hr

0.16812 8.3209

5.7 Electron Work Function

5.10 eV3.66 eV

2.14 5.65

5.8 Other Chemical Properties

Chemical Stability, Ionization, Solubility

Corrosion, Highly Inflammable, Ionization, Solubility

6 Atomic

6.1 Atomic Number

7912

3 117

6.2 Electron Configuration

[Xe] 4f¹⁴ 5d¹⁰ 6s¹

[Ne] 3s²

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

7912

3 117

6.4.2 Number of Neutrons

11812

4 184

6.4.3 Number of Electrons

7912

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

151.00 pm160.00 pm

112 265

6.5.2 Covalent Radius

144.00 pm141.00 pm

96 260

6.5.3 Van der Waals Radius

166.00 pm173.00 pm

139 348

6.6 Atomic Weight

196.97 amu24.31 amu

6.94 294

6.7 Atomic Volume

10.20 cm3/mol13.97 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

43.40 (-eV)40.00 (-eV)

8 392.42

6.10 Lattice Constant

407.82 pm320.94 pm

228.58 891.25

6.11 Lattice Angles

π/2, π/2, π/2

π/2, π/2, 2 π/3

6.12 Lattice C/A Ratio

1.61NA

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

19.30 g/cm³1.74 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

17.31 g/cm31.58 g/cm3

0.512 20

7.2 Tensile Strength

120.00 MPaNA

2.5 11000

7.3 Viscosity

NANA

0.001526 0.001526

7.4 Vapor Pressure

7.4.1 Vapor Pressure at 1000 K

0.00 (Pa)NA

2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

67.00 (Pa)NA

2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

27.00 GPa17.00 GPa

1.3 222

7.5.2 Bulk Modulus

180.00 GPa45.00 GPa

1.6 462

7.5.3 Young's Modulus

79.00 GPa45.00 GPa

1.7 528

7.6 Poisson Ratio

0.400.29

0.032 0.47

7.7 Other Mechanical Properties

Ductile, Malleable

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

19.321.74

0.53 4500

8.1.2 Magnetic Ordering

Diamagnetic

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

2.20 nΩ·m43.90 nΩ·m

0.18 961

8.2.3 Electrical Conductivity

0.45 10⁶/cm Ω0.23 10⁶/cm Ω

0.00666 0.63

8.2.4 Electron Affinity

222.80 kJ/mol0.00 kJ/mol

0 222.8

9 Thermal

9.1 Specific Heat

0.13 J/(kg K)1.02 J/(kg K)

0.11 3.6

9.2 Molar Heat Capacity

25.42 J/mol·K24.87 J/mol·K

16.443 62.7

9.3 Thermal Conductivity

318.00 W/m·K156.00 W/m·K

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

14.20 µm/(m·K)24.80 µm/(m·K)

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

324.40 kJ/mol128.70 kJ/mol

7.32 799.1

9.6.2 Enthalpy of Fusion

12.55 kJ/mol8.95 kJ/mol

2.1 35.23

9.6.3 Enthalpy of Atomization

364.00 kJ/mol148.50 kJ/mol

61.5 837

9.7 Standard Molar Entropy

47.40 J/mol.K32.70 J/mol.K

9.5 198.1

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