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Neodymium vs Silver

Neodymium
Silver
Silver vs Neodymium


Periodic Table
Symbol
-  
Ag  
Group Number
1  
17
11  
7
Period Number
6  
5  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7440008  
99+
7440224  
99+
Space Group Name
P63/mmc  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
  • Neodymium is not found free in nature, hence it is not a native metal.
  • Neodymium metal found in minerals like Monazite and Bastnaesite.
  
  • 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.
  
Sources
Found in Minerals, Mining  
Earth's crust, Found in Minerals, Ores of metals  
History
  
  
Who Discovered
Carl Auer von Welsbach  
-  
Discovery
In 1885  
Before 5000 BC  
Abundance
  
  
Abundance In Universe
0.00 %  
17
0.00 %  
27
Abundance In Sun
0.00 %  
24
0.00 %  
26
Abundance In Meteorites
0.00 %  
30
0.00 %  
38
Abundance In Earth's Crust
0.00 %  
20
0.00 %  
99+
Abundance In Oceans
0.00 %  
30
0.00 %  
19
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Neodymium-Iron-boron alloy is used to make permanent magnets.
  • It is used in microphones, Mp3 player, loudspeakers, mobile phones, etc.
  
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  
Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry  
Chemical Industry, Clothing Industry, Electrical Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry  
Other Uses
Alloys  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Non Toxic  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
34
0.00 Blood/mg dm-3  
29
In Bone
0.00 p.p.m.  
99+
0.44 p.p.m.  
24
Physical
Melting Point
1,010.00 °C  
99+
961.93 °C  
99+
Boiling Point
3,127.00 °C  
29
2,212.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
7.00  
3
2.50  
15
Brinell Hardness
265.00 MPa  
99+
251.00 MPa  
99+
Vickers Hardness
345.00 MPa  
99+
229.00 MPa  
99+
Speed of Sound
2,330.00 m/s  
99+
2,680.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.64  
30
0.16  
99+
Reflectivity
80.00 %  
7
97.00 %  
1
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
-  
Ag  
Isotopes
  
  
Known Isotopes
30  
9
36  
3
Electronegativity
  
  
Pauling Electronegativity
1.14  
99+
1.93  
10
Sanderson Electronegativity
1.14  
35
1.83  
14
Allred Rochow Electronegativity
1.07  
33
1.42  
19
Mulliken-Jaffe Electronegativity
1.14  
99+
1.47  
28
Allen Electronegativity
1.14  
99+
1.87  
10
Electropositivity
  
  
Pauling Electropositivity
2.86  
13
2.07  
99+
Ionization Energies
  
  
1st Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
27
2nd Energy Level
1,040.00 kJ/mol  
99+
2,070.00 kJ/mol  
11
3rd Energy Level
2,130.00 kJ/mol  
99+
3,361.00 kJ/mol  
19
4th Energy Level
3,900.00 kJ/mol  
99+
7,310.00 kJ/mol  
10
5th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
24
6th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
39
7th Energy level
5,331.00 kJ/mol  
99+
7,310.00 kJ/mol  
33
8th Energy Level
5,360.00 kJ/mol  
99+
7,310.00 kJ/mol  
31
9th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
27
10th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
32
11th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
31
12th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
99+
13th Energy Level
5,330.00 kJ/mol  
99+
7,310.00 kJ/mol  
25
14th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
99+
15th Energy Level
53,300.00 kJ/mol  
99+
73,100.00 kJ/mol  
22
16th Energy Level
533.10 kJ/mol  
99+
73,100.00 kJ/mol  
17
17th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
38
18th Energy Level
5,331.00 kJ/mol  
99+
7,310.00 kJ/mol  
28
19th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
35
20th Energy Level
536.00 kJ/mol  
99+
731.00 kJ/mol  
29
21st Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
99+
22nd Energy Level
533.00 kJ/mol  
99+
731.00 kJ/mol  
23
23rd Energy Level
5,331.00 kJ/mol  
27
731.00 kJ/mol  
99+
24th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
22
25th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
22
26th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
22
27th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
21
28th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
27
29th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
28
30th Energy Level
533.10 kJ/mol  
99+
731.00 kJ/mol  
22
Electrochemical Equivalent
1.79 g/amp-hr  
99+
4.02 g/amp-hr  
7
Electron Work Function
3.20 eV  
99+
4.26 eV  
27
Other Chemical Properties
Chemical Stability, Corrosion, Flammable, Ionization  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
60  
99+
47  
99+
Electron Configuration
[Xe] 4f4 6s2  
[Kr] 4d10 5s1  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Neodymium.jpg#100  
FCC-Crystal-Structure-of-Silver.jpg#100  
Atom
  
  
Number of Protons
60  
99+
47  
99+
Number of Neutrons
84  
99+
61  
99+
Number of Electrons
60  
99+
47  
99+
Radius of an Atom
  
  
Atomic Radius
181.00 pm  
15
144.00 pm  
38
Covalent Radius
201.00 pm  
10
145.00 pm  
99+
Van der Waals Radius
229.00 pm  
25
172.00 pm  
99+
Atomic Weight
144.24 amu  
99+
107.87 amu  
99+
Atomic Volume
20.60 cm3/mol  
28
10.30 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Praseodymium
  
Palladium
  
Next Element
Promethium
  
Cadmium
  
Valence Electron Potential
43.40 (-eV)  
99+
11.40 (-eV)  
99+
Lattice Constant
365.80 pm  
33
408.53 pm  
23
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.61  
18
1.59  
26
Mechanical
Density
  
  
Density At Room Temperature
7.01 g/cm3  
99+
10.49 g/cm3  
37
Density When Liquid (at m.p.)
6.89 g/cm3  
99+
9.32 g/cm3  
99+
Tensile Strength
345.00 MPa  
13
170.00 MPa  
21
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
23
0.00 (Pa)  
14
Vapor Pressure at 2000 K
101.00 (Pa)  
2
0.00 (Pa)  
38
Elasticity properties
  
  
Shear Modulus
16.30 GPa  
99+
30.00 GPa  
27
Bulk Modulus
31.80 GPa  
99+
100.00 GPa  
16
Young's Modulus
41.40 GPa  
99+
83.00 GPa  
25
Poisson Ratio
0.28  
16
0.37  
7
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
7.00  
99+
10.50  
39
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
7
0.00 H/m  
17
Susceptibility
0.00  
9
0.00  
32
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
643.00 nΩ·m  
6
15.87 nΩ·m  
99+
Electrical Conductivity
0.02 106/cm Ω  
99+
0.63 106/cm Ω  
1
Electron Affinity
50.00 kJ/mol  
26
125.60 kJ/mol  
5
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.24 J/(kg K)  
25
Molar Heat Capacity
27.45 J/mol·K  
22
25.35 J/mol·K  
99+
Thermal Conductivity
16.50 W/m·K  
99+
429.00 W/m·K  
1
Critical Temperature
1,297.00 K  
99+
1,235.00 K  
99+
Thermal Expansion
9.60 µm/(m·K)  
99+
18.90 µm/(m·K)  
25
Enthalpy
  
  
Enthalpy of Vaporization
273.00 kJ/mol  
99+
255.10 kJ/mol  
99+
Enthalpy of Fusion
7.14 kJ/mol  
99+
11.30 kJ/mol  
37
Enthalpy of Atomization
322.00 kJ/mol  
99+
284.50 kJ/mol  
99+
Standard Molar Entropy
71.50 J/mol.K  
13
42.60 J/mol.K  
99+
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