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Silver vs Platinum

Silver
Platinum
Platinum vs Silver


Periodic Table
Symbol
Ag  
Pt  
Group Number
11  
7
10  
8
Period Number
5  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440224  
99+
7440064  
99+
Space Group Name
Fm_ 3m  
Fm_ 3m  
Space Group Number
225.00  
3
225.00  
3
Facts
Interesting Facts
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Earth's crust, Found in Minerals, Ores of metals  
Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
-  
Antonio de Ulloa  
Discovery
Before 5000 BC  
In 1735  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
20
Abundance In Sun
0.00 %  
26
0.00 %  
19
Abundance In Meteorites
0.00 %  
38
0.00 %  
25
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
19
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry  
Aerospace Industry, Chemical Industry  
Medical Uses
Dentistry, Pharmaceutical Industry  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Non Toxic  
Non Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
29
0.00 Blood/mg dm-3  
37
In Bone
0.44 p.p.m.  
24
0.00 p.p.m.  
99+
Physical
Melting Point
961.93 °C  
99+
1,772.00 °C  
16
Boiling Point
2,212.00 °C  
99+
3,827.00 °C  
15
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
3.50  
12
Brinell Hardness
251.00 MPa  
99+
300.00 MPa  
99+
Vickers Hardness
229.00 MPa  
99+
400.00 MPa  
99+
Speed of Sound
2,680.00 m/s  
99+
2,800.00 m/s  
99+
Optical Properties
  
  
Refractive Index
0.16  
99+
2.41  
6
Reflectivity
97.00 %  
1
73.00 %  
10
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ag  
Pt  
Isotopes
  
  
Known Isotopes
36  
3
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.93  
10
2.28  
4
Sanderson Electronegativity
1.83  
14
2.28  
5
Allred Rochow Electronegativity
1.42  
19
1.44  
18
Mulliken-Jaffe Electronegativity
1.47  
28
2.20  
6
Allen Electronegativity
1.87  
10
1.72  
19
Electropositivity
  
  
Pauling Electropositivity
2.07  
99+
1.72  
99+
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol  
27
870.00 kJ/mol  
10
2nd Energy Level
2,070.00 kJ/mol  
11
1,791.00 kJ/mol  
22
3rd Energy Level
3,361.00 kJ/mol  
19
2,277.00 kJ/mol  
99+
4th Energy Level
7,310.00 kJ/mol  
10
8,702.00 kJ/mol  
6
5th Energy Level
7,310.00 kJ/mol  
24
8,702.00 kJ/mol  
9
6th Energy Level
7,310.00 kJ/mol  
39
8,700.00 kJ/mol  
27
7th Energy level
7,310.00 kJ/mol  
33
8,700.00 kJ/mol  
23
8th Energy Level
7,310.00 kJ/mol  
31
8,700.00 kJ/mol  
23
9th Energy Level
7,310.00 kJ/mol  
27
5,660.00 kJ/mol  
99+
10th Energy Level
7,310.00 kJ/mol  
32
8,700.00 kJ/mol  
24
11th Energy Level
7,310.00 kJ/mol  
31
8,700.00 kJ/mol  
21
12th Energy Level
7,310.00 kJ/mol  
99+
8,700.00 kJ/mol  
99+
13th Energy Level
7,310.00 kJ/mol  
25
8,700.00 kJ/mol  
16
14th Energy Level
731.00 kJ/mol  
99+
870.00 kJ/mol  
99+
15th Energy Level
73,100.00 kJ/mol  
22
87,000.00 kJ/mol  
9
16th Energy Level
73,100.00 kJ/mol  
17
870.00 kJ/mol  
99+
17th Energy Level
731.00 kJ/mol  
38
870.00 kJ/mol  
27
18th Energy Level
7,310.00 kJ/mol  
28
8,700.00 kJ/mol  
16
19th Energy Level
731.00 kJ/mol  
35
870.00 kJ/mol  
25
20th Energy Level
731.00 kJ/mol  
29
870.00 kJ/mol  
15
21st Energy Level
731.00 kJ/mol  
99+
870.00 kJ/mol  
38
22nd Energy Level
731.00 kJ/mol  
23
870.00 kJ/mol  
13
23rd Energy Level
731.00 kJ/mol  
99+
870.10 kJ/mol  
39
24th Energy Level
731.00 kJ/mol  
22
870.00 kJ/mol  
9
25th Energy Level
731.00 kJ/mol  
22
870.00 kJ/mol  
7
26th Energy Level
731.00 kJ/mol  
22
870.00 kJ/mol  
7
27th Energy Level
731.00 kJ/mol  
21
870.10 kJ/mol  
6
28th Energy Level
731.00 kJ/mol  
27
870.10 kJ/mol  
9
29th Energy Level
731.00 kJ/mol  
28
870.00 kJ/mol  
10
30th Energy Level
731.00 kJ/mol  
22
870.00 kJ/mol  
7
Electrochemical Equivalent
4.02 g/amp-hr  
7
1.82 g/amp-hr  
39
Electron Work Function
4.26 eV  
27
5.65 eV  
4
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Chemical Stability, Anti Corrosion, Ionization  
Atomic
Atomic Number
47  
99+
78  
38
Electron Configuration
[Kr] 4d10 5s1  
[Xe] 4f14 5d9 6s1  
Crystal Structure
Face Centered Cubic (FCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100  
FCC-Crystal-Structure-of-Platinum.jpg#100  
Atom
  
  
Number of Protons
47  
99+
78  
38
Number of Neutrons
61  
99+
117  
25
Number of Electrons
47  
99+
78  
38
Radius of an Atom
  
  
Atomic Radius
144.00 pm  
38
139.00 pm  
99+
Covalent Radius
145.00 pm  
99+
136.00 pm  
99+
Van der Waals Radius
172.00 pm  
99+
175.00 pm  
99+
Atomic Weight
107.87 amu  
99+
47.87 amu  
99+
Atomic Volume
10.30 cm3/mol  
99+
9.09 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Palladium
  
Iridium
  
Next Element
Cadmium
  
Gold
  
Valence Electron Potential
11.40 (-eV)  
99+
392.42 (-eV)  
1
Lattice Constant
408.53 pm  
23
392.42 pm  
27
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.59  
26
1.56  
99+
Mechanical
Density
  
  
Density At Room Temperature
10.49 g/cm3  
37
21.45 g/cm3  
11
Density When Liquid (at m.p.)
9.32 g/cm3  
99+
19.77 g/cm3  
12
Tensile Strength
170.00 MPa  
21
125.00 MPa  
26
Viscosity
0.00  
23
0.00  
16
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
14
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
38
0.07 (Pa)  
18
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
61.00 GPa  
14
Bulk Modulus
100.00 GPa  
16
230.00 GPa  
6
Young's Modulus
83.00 GPa  
25
168.00 GPa  
15
Poisson Ratio
0.37  
7
0.38  
6
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.50  
39
21.45  
13
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
14
Susceptibility
0.00  
32
0.00  
20
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
15.87 nΩ·m  
99+
105.00 nΩ·m  
30
Electrical Conductivity
0.63 106/cm Ω  
1
0.10 106/cm Ω  
26
Electron Affinity
125.60 kJ/mol  
5
205.30 kJ/mol  
2
Thermal
Specific Heat
0.24 J/(kg K)  
25
0.13 J/(kg K)  
40
Molar Heat Capacity
25.35 J/mol·K  
99+
25.86 J/mol·K  
99+
Thermal Conductivity
429.00 W/m·K  
1
71.60 W/m·K  
24
Critical Temperature
1,235.00 K  
99+
2,041.00 K  
19
Thermal Expansion
18.90 µm/(m·K)  
25
8.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol  
99+
510.50 kJ/mol  
15
Enthalpy of Fusion
11.30 kJ/mol  
37
19.70 kJ/mol  
12
Enthalpy of Atomization
284.50 kJ/mol  
99+
565.00 kJ/mol  
15
Standard Molar Entropy
42.60 J/mol.K  
99+
41.60 J/mol.K  
99+
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