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Gold vs Manganese


Manganese vs Gold


Periodic Table

Symbol
Au   
Mn   

Group Number
11   
7
7   
11

Period Number
6   
4   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
7440575   
31
7439965   
99+

Space Group Name
Fm_ 3m   
I_ 43m   

Space Group Number
225.00   
2
217.00   
4

Facts

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

Sources
Earth's crust, Mining, Ores of metals   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Unknown   
Johann Gottlieb Gahn   

Discovery
Before 6000 BCE   
In 1774   

Abundance
  
  

Abundance In Universe
6 * 10-8 %   
26
8 * 10-4 %   
8

Abundance In Sun
~0.0000001 %   
26
~0.001 %   
8

Abundance In Meteorites
0.00 %   
99+
0.27 %   
8

Abundance In Earth's Crust
0.00 %   
99+
0.11 %   
8

Abundance In Oceans
0.00 %   
21
0.00 %   
13

Abundance In Humans
0.00 %   
18
0.00 %   
13

Uses

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.
  
  • 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.
  

Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry   
Automobile Industry, Electrical Industry, Electronic Industry   

Medical Uses
Dentistry, Pharmaceutical Industry   
NA   

Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.00 Blood/mg dm-3   
35
0.08 Blood/mg dm-3   
14

In Bone
0.02 p.p.m.   
30
100.00 p.p.m.   
8

Physical Properties

Melting Point
1,064.43 °C   
99+
1,245.00 °C   
37

Boiling Point
2,807.00 °C   
36
1,962.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Gold   
Silver   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
2.50   
14
6.00   
6

Brinell Hardness
194.00 MPa   
99+
196.00 MPa   
99+

Vickers Hardness
216.00 MPa   
31
Not Available   

Speed of Sound
2,030.00 m/s   
99+
5,150.00 m/s   
7

Optical Properties
  
  

Reflectivity
95.00 %   
2
Not Available   

Allotropes
No   
No   

α Allotropes
Not Available   
Not Available   

β Allotropes
Not Available   
Not Available   

γ Allotropes
Not Available   
Not Available   

Chemical Properties

Chemical Formula
Au   
Mn   

Isotopes
  
  

Known Isotopes
36   
3
21   
18

Electronegativity
  
  

Pauling Electronegativity
2.54   
1
1.55   
25

Sanderson Electronegativity
Not Available   
2.20   
7

Allred Rochow Electronegativity
1.42   
18
1.60   
9

Mulliken-Jaffe Electronegativity
1.87   
7
Not Available   

Allen Electronegativity
1.92   
5
1.75   
15

Electropositivity
  
  

Pauling Electropositivity
1.46   
99+
2.45   
29

Ionization Energies
  
  

1st Energy Level
890.10 kJ/mol   
8
717.30 kJ/mol   
30

2nd Energy Level
1,980.00 kJ/mol   
12
1,509.00 kJ/mol   
39

3rd Energy Level
Not Available   
3,248.00 kJ/mol   
21

4th Energy Level
Not Available   
4,940.00 kJ/mol   
20

5th Energy Level
Not Available   
6,990.00 kJ/mol   
17

6th Energy Level
Not Available   
9,220.00 kJ/mol   
16

7th Energy level
Not Available   
11,500.00 kJ/mol   
16

8th Energy Level
Not Available   
18,770.00 kJ/mol   
5

9th Energy Level
Not Available   
21,400.00 kJ/mol   
6

10th Energy Level
Not Available   
23,960.00 kJ/mol   
9

11th Energy Level
Not Available   
27,590.00 kJ/mol   
10

12th Energy Level
Not Available   
30,330.00 kJ/mol   
10

13th Energy Level
Not Available   
33,150.00 kJ/mol   
11

14th Energy Level
Not Available   
38,880.00 kJ/mol   
10

15th Energy Level
Not Available   
41,987.00 kJ/mol   
13

16th Energy Level
Not Available   
109,480.00 kJ/mol   
1

17th Energy Level
Not Available   
118,100.00 kJ/mol   
2

18th Energy Level
Not Available   
127,100.00 kJ/mol   
3

19th Energy Level
Not Available   
138,600.00 kJ/mol   
4

20th Energy Level
Not Available   
148,500.00 kJ/mol   
6

21st Energy Level
Not Available   
158,600.00 kJ/mol   
6

22nd Energy Level
Not Available   
172,500.00 kJ/mol   
5

23rd Energy Level
Not Available   
181,380.00 kJ/mol   
5

Electrochemical Equivalent
2.45 g/amp-hr   
21
0.29 g/amp-hr   
99+

Electron Work Function
5.10 eV   
4
4.10 eV   
25

Other Chemical Properties
Chemical Stability, Ionization, Solubility   
Ionization, Radioactive Isotopes   

Atomic Properties

Atomic Number
79   
37
25   
99+

Electron Configuration
[Xe] 4f14 5d10 6s1   
[Ar] 3d5 4s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Gold.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
79   
37
25   
99+

Number of Neutrons
118   
23
30   
99+

Number of Electrons
79   
37
25   
99+

Radius of an Atom
  
  

Atomic Radius
151.00 pm   
32
127.00 pm   
99+

Covalent Radius
144.00 pm   
40
139.00 pm   
99+

Van der Waals Radius
166.00 pm   
39
200.00 pm   
28

Atomic Weight
196.97 amu   
33
54.94 amu   
99+

Atomic Volume
10.20 cm3/mol   
99+
1.39 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Platinum
  
Chromium
  

Next Element
Mercury
  
Iron
  

Valence Electron Potential
43.40 (-eV)   
99+
220.00 (-eV)   
2

Lattice Constant
407.82 pm   
21
891.25 pm   
1

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   

Lattice C/A Ratio
1.61   
4
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
19.30 g/cm3   
15
7.21 g/cm3   
99+

Density When Liquid (at m.p.)
17.31 g/cm3   
6
5.95 g/cm3   
99+

Tensile Strength
120.00 MPa   
15
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
23
0.00 (Pa)   
12

Vapor Pressure at 2000 K
67.00 (Pa)   
4
Not Available   

Elasticity properties
  
  

Shear Modulus
27.00 GPa   
27
Not Available   

Bulk Modulus
180.00 GPa   
9
120.00 GPa   
14

Young's Modulus
79.00 GPa   
24
198.00 GPa   
12

Poisson Ratio
0.40   
4
Not Available   

Other Mechanical Properties
Ductile, Malleable   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
19.32   
8
7.21   
99+

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
2.20 nΩ·m   
99+
1.44 nΩ·m   
99+

Electrical Conductivity
0.45 106/cm Ω   
3
0.01 106/cm Ω   
99+

Electron Affinity
222.80 kJ/mol   
1
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
0.13 J/(kg K)   
39
0.48 J/(kg K)   
11

Molar Heat Capacity
25.42 J/mol·K   
40
26.32 J/mol·K   
29

Thermal Conductivity
318.00 W/m·K   
3
7.81 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
14.20 µm/(m·K)   
26
21.70 µm/(m·K)   
21

Enthalpy
  
  

Enthalpy of Vaporization
324.40 kJ/mol   
27
219.70 kJ/mol   
99+

Enthalpy of Fusion
12.55 kJ/mol   
27
14.64 kJ/mol   
23

Enthalpy of Atomization
364.00 kJ/mol   
25
280.30 kJ/mol   
38

Standard Molar Entropy
47.40 J/mol.K   
32
32.00 J/mol.K   
99+

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