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Silver Molybdenum Comparison

Silver
Molybdenum
Molybdenum Silver comparison


Periodic Table
Symbol
Ag  
Mo  
Group Number
11  
7
6  
12
Period Number
5  
5  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440224  
99+
7439987  
99+
Space Group Name
Fm_ 3m  
Im_ 3m  
Space Group Number
225.00  
3
229.00  
2
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.
  
  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
Sources
Earth's crust, Found in Minerals, Ores of metals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
Carl Wilhelm Scheele  
Discovery
Before 5000 BC  
In 1778  
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 %  
24
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
39
Abundance In Oceans
0.00 %  
19
0.00 %  
9
Abundance In Humans
0.00 %  
24
0.00 %  
17
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.
  
  • Its alloys are used to make engine parts, drills, saw blade, etc.
  • Lubricant additive made up of Molybdenum disulfide is commonly used in the industry. It is also used as a catalyst.
  
Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
Dentistry, Pharmaceutical Industry  
-  
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  
29
0.00 Blood/mg dm-3  
31
In Bone
0.44 p.p.m.  
24
0.70 p.p.m.  
20
Physical
Melting Point
961.93 °C  
99+
2,617.00 °C  
5
Boiling Point
2,212.00 °C  
99+
4,612.00 °C  
9
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
5.50  
7
Brinell Hardness
251.00 MPa  
99+
1,370.00 MPa  
7
Vickers Hardness
229.00 MPa  
99+
1,400.00 MPa  
11
Speed of Sound
2,680.00 m/s  
99+
5,400.00 m/s  
9
Optical Properties
  
  
Refractive Index
0.16  
99+
2.00  
15
Reflectivity
97.00 %  
1
58.00 %  
25
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ag  
Mo  
Isotopes
  
  
Known Isotopes
36  
3
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.93  
10
2.16  
6
Sanderson Electronegativity
1.83  
14
1.15  
34
Allred Rochow Electronegativity
1.42  
19
1.30  
25
Mulliken-Jaffe Electronegativity
1.47  
28
2.16  
7
Allen Electronegativity
1.87  
10
2.16  
3
Electropositivity
  
  
Pauling Electropositivity
2.07  
99+
1.84  
99+
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol  
27
684.30 kJ/mol  
37
2nd Energy Level
2,070.00 kJ/mol  
11
1,560.00 kJ/mol  
38
3rd Energy Level
3,361.00 kJ/mol  
19
2,618.00 kJ/mol  
99+
4th Energy Level
7,310.00 kJ/mol  
10
4,480.00 kJ/mol  
36
5th Energy Level
7,310.00 kJ/mol  
24
5,257.00 kJ/mol  
99+
6th Energy Level
7,310.00 kJ/mol  
39
6,640.80 kJ/mol  
99+
7th Energy level
7,310.00 kJ/mol  
33
12,125.00 kJ/mol  
13
8th Energy Level
7,310.00 kJ/mol  
31
13,860.00 kJ/mol  
16
9th Energy Level
7,310.00 kJ/mol  
27
15,835.00 kJ/mol  
16
10th Energy Level
7,310.00 kJ/mol  
32
17,980.00 kJ/mol  
18
11th Energy Level
7,310.00 kJ/mol  
31
20,190.00 kJ/mol  
17
12th Energy Level
7,310.00 kJ/mol  
99+
22,219.00 kJ/mol  
38
13th Energy Level
7,310.00 kJ/mol  
25
26,930.00 kJ/mol  
13
14th Energy Level
731.00 kJ/mol  
99+
29,196.00 kJ/mol  
13
15th Energy Level
73,100.00 kJ/mol  
22
52,490.00 kJ/mol  
99+
16th Energy Level
73,100.00 kJ/mol  
17
55,000.00 kJ/mol  
99+
17th Energy Level
731.00 kJ/mol  
38
61,400.00 kJ/mol  
9
18th Energy Level
7,310.00 kJ/mol  
28
67,700.00 kJ/mol  
9
19th Energy Level
731.00 kJ/mol  
35
74,000.00 kJ/mol  
9
20th Energy Level
731.00 kJ/mol  
29
80,400.00 kJ/mol  
10
21st Energy Level
731.00 kJ/mol  
99+
87,000.00 kJ/mol  
9
22nd Energy Level
731.00 kJ/mol  
23
93,400.00 kJ/mol  
7
23rd Energy Level
731.00 kJ/mol  
99+
98,420.00 kJ/mol  
6
24th Energy Level
731.00 kJ/mol  
22
104,400.00 kJ/mol  
2
25th Energy Level
731.00 kJ/mol  
22
121,900.00 kJ/mol  
1
26th Energy Level
731.00 kJ/mol  
22
127,700.00 kJ/mol  
1
27th Energy Level
731.00 kJ/mol  
21
133,800.00 kJ/mol  
1
28th Energy Level
731.00 kJ/mol  
27
139,800.00 kJ/mol  
1
29th Energy Level
731.00 kJ/mol  
28
148,100.00 kJ/mol  
1
30th Energy Level
731.00 kJ/mol  
22
154,500.00 kJ/mol  
1
Electrochemical Equivalent
4.02 g/amp-hr  
7
0.89 g/amp-hr  
99+
Electron Work Function
4.26 eV  
27
4.60 eV  
17
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
47  
99+
42  
99+
Electron Configuration
[Kr] 4d10 5s1  
[Kr] 4d5 5s1  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
47  
99+
42  
99+
Number of Neutrons
61  
99+
54  
99+
Number of Electrons
47  
99+
42  
99+
Radius of an Atom
  
  
Atomic Radius
144.00 pm  
38
139.00 pm  
99+
Covalent Radius
145.00 pm  
99+
154.00 pm  
34
Van der Waals Radius
172.00 pm  
99+
200.00 pm  
35
Atomic Weight
107.87 amu  
99+
95.95 amu  
99+
Atomic Volume
10.30 cm3/mol  
99+
9.40 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Palladium
  
Niobium
  
Next Element
Cadmium
  
Technetium
  
Valence Electron Potential
11.40 (-eV)  
99+
88.60 (-eV)  
13
Lattice Constant
408.53 pm  
23
314.70 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.59  
26
1.03  
99+
Mechanical
Density
  
  
Density At Room Temperature
10.49 g/cm3  
37
10.28 g/cm3  
39
Density When Liquid (at m.p.)
9.32 g/cm3  
99+
9.33 g/cm3  
99+
Tensile Strength
170.00 MPa  
21
324.00 MPa  
15
Viscosity
0.00  
23
0.00  
5
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
14
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
38
0.00 (Pa)  
27
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
126.00 GPa  
8
Bulk Modulus
100.00 GPa  
16
230.00 GPa  
6
Young's Modulus
83.00 GPa  
25
329.00 GPa  
6
Poisson Ratio
0.37  
7
0.31  
13
Other Mechanical Properties
Ductile, Malleable  
Ductile, Weldable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.50  
39
10.22  
40
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
9
Susceptibility
0.00  
32
0.00  
29
Electrical Properties
  
  
Electrical Property
Conductor  
Semiconductor  
Resistivity
15.87 nΩ·m  
99+
53.40 nΩ·m  
99+
Electrical Conductivity
0.63 106/cm Ω  
1
0.19 106/cm Ω  
11
Electron Affinity
125.60 kJ/mol  
5
71.90 kJ/mol  
16
Thermal
Specific Heat
0.24 J/(kg K)  
25
0.25 J/(kg K)  
21
Molar Heat Capacity
25.35 J/mol·K  
99+
24.06 J/mol·K  
99+
Thermal Conductivity
429.00 W/m·K  
1
138.00 W/m·K  
12
Critical Temperature
1,235.00 K  
99+
2,896.00 K  
6
Thermal Expansion
18.90 µm/(m·K)  
25
4.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol  
99+
594.10 kJ/mol  
9
Enthalpy of Fusion
11.30 kJ/mol  
37
27.61 kJ/mol  
5
Enthalpy of Atomization
284.50 kJ/mol  
99+
653.00 kJ/mol  
7
Standard Molar Entropy
42.60 J/mol.K  
99+
28.70 J/mol.K  
99+
Summary >>
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