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Manganese vs Platinum

Manganese
Platinum
Platinum vs Manganese


Periodic Table
Symbol
Mn   
Pt   
Group Number
7   
11
10   
8
Period Number
4   
6   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7439965   
99+
7440064   
99+
Space Group Name
I_ 43m   
Fm_ 3m   
Space Group Number
217.00   
4
225.00   
2
Facts
Interesting Facts
  • Manganese is an essential trace element in all forms of life.
  • Manganese metal oxidizes very easily, but it does not fuse that easily.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of metals, Ores of Minerals   
History
  
  
Who Discovered
Johann Gottlieb Gahn   
Antonio de Ulloa   
Discovery
In 1774   
In 1735   
Abundance
  
  
Abundance In Universe
8 * 10-4 %   
8
5 * 10-7 %   
19
Abundance In Sun
~0.001 %   
8
~0.0000009 %   
19
Abundance In Meteorites
0.27 %   
8
0.00 %   
25
Abundance In Earth's Crust
0.11 %   
8
0.00 %   
99+
Abundance In Oceans
0.00 %   
13
Not Available   
Abundance In Humans
0.00 %   
13
Not Available   
Uses
Uses & Benefits
  • 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.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Chemical Industry   
Medical Uses
NA   
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
Other Uses
Alloys   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Toxic   
Non Toxic   
Present in Human Body
Yes   
No   
In Blood
0.08 Blood/mg dm-3   
14
Not Available   
In Bone
100.00 p.p.m.   
8
Not Available   
Physical Properties
Melting Point
1,245.00 °C   
37
1,772.00 °C   
16
Boiling Point
1,962.00 °C   
99+
3,827.00 °C   
15
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.00   
6
3.50   
11
Brinell Hardness
196.00 MPa   
99+
300.00 MPa   
34
Vickers Hardness
Not Available   
400.00 MPa   
25
Speed of Sound
5,150.00 m/s   
7
2,800.00 m/s   
29
Optical Properties
  
  
Reflectivity
Not Available   
73.00 %   
8
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
Mn   
Pt   
Isotopes
  
  
Known Isotopes
21   
18
35   
4
Electronegativity
  
  
Pauling Electronegativity
1.55   
25
2.28   
3
Sanderson Electronegativity
2.20   
7
Not Available   
Allred Rochow Electronegativity
1.60   
9
1.44   
17
Allen Electronegativity
1.75   
15
1.72   
16
Electropositivity
  
  
Pauling Electropositivity
2.45   
29
1.72   
99+
Ionization Energies
  
  
1st Energy Level
717.30 kJ/mol   
30
870.00 kJ/mol   
10
2nd Energy Level
1,509.00 kJ/mol   
39
1,791.00 kJ/mol   
21
3rd Energy Level
3,248.00 kJ/mol   
21
Not Available   
4th Energy Level
4,940.00 kJ/mol   
20
Not Available   
5th Energy Level
6,990.00 kJ/mol   
17
Not Available   
6th Energy Level
9,220.00 kJ/mol   
16
Not Available   
7th Energy level
11,500.00 kJ/mol   
16
Not Available   
8th Energy Level
18,770.00 kJ/mol   
5
Not Available   
9th Energy Level
21,400.00 kJ/mol   
6
Not Available   
10th Energy Level
23,960.00 kJ/mol   
9
Not Available   
11th Energy Level
27,590.00 kJ/mol   
10
Not Available   
12th Energy Level
30,330.00 kJ/mol   
10
Not Available   
13th Energy Level
33,150.00 kJ/mol   
11
Not Available   
14th Energy Level
38,880.00 kJ/mol   
10
Not Available   
15th Energy Level
41,987.00 kJ/mol   
13
Not Available   
16th Energy Level
109,480.00 kJ/mol   
1
Not Available   
17th Energy Level
118,100.00 kJ/mol   
2
Not Available   
18th Energy Level
127,100.00 kJ/mol   
3
Not Available   
19th Energy Level
138,600.00 kJ/mol   
4
Not Available   
20th Energy Level
148,500.00 kJ/mol   
6
Not Available   
21st Energy Level
158,600.00 kJ/mol   
6
Not Available   
22nd Energy Level
172,500.00 kJ/mol   
5
Not Available   
23rd Energy Level
181,380.00 kJ/mol   
5
Not Available   
Electrochemical Equivalent
0.29 g/amp-hr   
99+
1.82 g/amp-hr   
35
Electron Work Function
4.10 eV   
25
5.65 eV   
1
Other Chemical Properties
Ionization, Radioactive Isotopes   
Chemical Stability, Anti Corrosion, Ionization   
Atomic Properties
Atomic Number
25   
99+
78   
38
Electron Configuration
[Ar] 3d5 4s2   
[Xe] 4f14 5d9 6s1   
Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Platinum.jpg#100   
Atom
  
  
Number of Protons
25   
99+
78   
38
Number of Neutrons
30   
99+
117   
24
Number of Electrons
25   
99+
78   
38
Radius of an Atom
  
  
Atomic Radius
127.00 pm   
99+
139.00 pm   
39
Covalent Radius
139.00 pm   
99+
136.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
175.00 pm   
36
Atomic Weight
54.94 amu   
99+
47.87 amu   
99+
Atomic Volume
1.39 cm3/mol   
99+
9.09 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Chromium
  
Iridium
  
Next Element
Iron
  
Gold
  
Valence Electron Potential
220.00 (-eV)   
2
392.42 (-eV)   
1
Lattice Constant
891.25 pm   
1
392.42 pm   
24
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
7.21 g/cm3   
99+
21.45 g/cm3   
11
Density When Liquid (at m.p.)
5.95 g/cm3   
99+
19.77 g/cm3   
2
Tensile Strength
Not Available   
125.00 MPa   
14
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
12
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.07 (Pa)   
18
Elasticity properties
  
  
Shear Modulus
Not Available   
61.00 GPa   
14
Bulk Modulus
120.00 GPa   
14
230.00 GPa   
6
Young's Modulus
198.00 GPa   
12
168.00 GPa   
14
Poisson Ratio
Not Available   
0.38   
6
Other Mechanical Properties
NA   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.21   
99+
21.45   
4
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Permeability
Not Available   
0.00 H/m   
3
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
1.44 nΩ·m   
99+
105.00 nΩ·m   
30
Electrical Conductivity
0.01 106/cm Ω   
99+
0.10 106/cm Ω   
21
Electron Affinity
0.00 kJ/mol   
40
205.30 kJ/mol   
2
Thermal Properties
Specific Heat
0.48 J/(kg K)   
11
0.13 J/(kg K)   
39
Molar Heat Capacity
26.32 J/mol·K   
29
25.86 J/mol·K   
35
Thermal Conductivity
7.81 W/m·K   
99+
71.60 W/m·K   
24
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
21.70 µm/(m·K)   
21
8.80 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
219.70 kJ/mol   
99+
510.50 kJ/mol   
11
Enthalpy of Fusion
14.64 kJ/mol   
23
19.70 kJ/mol   
12
Enthalpy of Atomization
280.30 kJ/mol   
38
565.00 kJ/mol   
11
Standard Molar Entropy
32.00 J/mol.K   
99+
41.60 J/mol.K   
36
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