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Silver Terbium Comparison

Silver
Terbium
Terbium Silver comparison


Periodic Table
Symbol
Ag  
Tb  
Group Number
11  
7
3  
15
Period Number
5  
6  
Block
d block  
f block  
Element Family
Transition Metal  
Lanthanide  
CAS Number
7440224  
99+
7440279  
99+
Space Group Name
Fm_ 3m  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
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.
  
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  
Sources
Earth's crust, Found in Minerals, Ores of metals  
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
Carl Gustaf Mosander  
Discovery
Before 5000 BC  
In 1842  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
28
Abundance In Sun
0.00 %  
26
0.00 %  
29
Abundance In Meteorites
0.00 %  
38
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
40
Abundance In Oceans
0.00 %  
19
0.00 %  
99+
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.
  
  • Terbium salts are used in optical devices like laser devices.
  • Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
  
Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry  
Electronic Industry  
Medical Uses
Dentistry, Pharmaceutical Industry  
-  
Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Alloys  
Biological Properties
  
  
Toxicity
Non Toxic  
Low 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+
1,356.00 °C  
33
Boiling Point
2,212.00 °C  
99+
3,123.00 °C  
30
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
1.50  
19
Brinell Hardness
251.00 MPa  
99+
677.00 MPa  
19
Vickers Hardness
229.00 MPa  
99+
863.00 MPa  
20
Speed of Sound
2,680.00 m/s  
99+
2,620.00 m/s  
99+
Optical Properties
  
  
Refractive Index
0.16  
99+
1.60  
32
Reflectivity
97.00 %  
1
35.00 %  
34
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ag  
Tb  
Isotopes
  
  
Known Isotopes
36  
3
26  
13
Electronegativity
  
  
Pauling Electronegativity
1.93  
10
1.20  
40
Sanderson Electronegativity
1.83  
14
1.20  
32
Allred Rochow Electronegativity
1.42  
19
1.10  
31
Mulliken-Jaffe Electronegativity
1.47  
28
1.20  
39
Allen Electronegativity
1.87  
10
1.20  
99+
Electropositivity
  
  
Pauling Electropositivity
2.07  
99+
2.20  
39
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol  
27
603.40 kJ/mol  
99+
2nd Energy Level
2,070.00 kJ/mol  
11
1,174.80 kJ/mol  
99+
3rd Energy Level
3,361.00 kJ/mol  
19
2,417.00 kJ/mol  
99+
4th Energy Level
7,310.00 kJ/mol  
10
4,203.00 kJ/mol  
99+
5th Energy Level
7,310.00 kJ/mol  
24
5,658.00 kJ/mol  
99+
6th Energy Level
7,310.00 kJ/mol  
39
5,658.00 kJ/mol  
99+
7th Energy level
7,310.00 kJ/mol  
33
5,420.00 kJ/mol  
99+
8th Energy Level
7,310.00 kJ/mol  
31
5,650.00 kJ/mol  
99+
9th Energy Level
7,310.00 kJ/mol  
27
5,650.00 kJ/mol  
99+
10th Energy Level
7,310.00 kJ/mol  
32
5,650.00 kJ/mol  
99+
11th Energy Level
7,310.00 kJ/mol  
31
5,650.00 kJ/mol  
99+
12th Energy Level
7,310.00 kJ/mol  
99+
5,650.00 kJ/mol  
99+
13th Energy Level
7,310.00 kJ/mol  
25
5,650.00 kJ/mol  
99+
14th Energy Level
731.00 kJ/mol  
99+
5,650.00 kJ/mol  
99+
15th Energy Level
73,100.00 kJ/mol  
22
56,500.00 kJ/mol  
99+
16th Energy Level
73,100.00 kJ/mol  
17
56,500.00 kJ/mol  
99+
17th Energy Level
731.00 kJ/mol  
38
565.80 kJ/mol  
99+
18th Energy Level
7,310.00 kJ/mol  
28
5,658.00 kJ/mol  
99+
19th Energy Level
731.00 kJ/mol  
35
565.00 kJ/mol  
99+
20th Energy Level
731.00 kJ/mol  
29
565.00 kJ/mol  
99+
21st Energy Level
731.00 kJ/mol  
99+
565.80 kJ/mol  
99+
22nd Energy Level
731.00 kJ/mol  
23
565.00 kJ/mol  
99+
23rd Energy Level
731.00 kJ/mol  
99+
565.80 kJ/mol  
99+
24th Energy Level
731.00 kJ/mol  
22
565.80 kJ/mol  
99+
25th Energy Level
731.00 kJ/mol  
22
565.00 kJ/mol  
99+
26th Energy Level
731.00 kJ/mol  
22
565.80 kJ/mol  
99+
27th Energy Level
731.00 kJ/mol  
21
565.80 kJ/mol  
99+
28th Energy Level
731.00 kJ/mol  
27
565.80 kJ/mol  
99+
29th Energy Level
731.00 kJ/mol  
28
565.80 kJ/mol  
99+
30th Energy Level
731.00 kJ/mol  
22
565.00 kJ/mol  
99+
Electrochemical Equivalent
4.02 g/amp-hr  
7
1.98 g/amp-hr  
35
Electron Work Function
4.26 eV  
27
3.00 eV  
99+
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
47  
99+
65  
99+
Electron Configuration
[Kr] 4d10 5s1  
[Xe] 4f9 6s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100  
HCP-Crystal-Structure-of-Terbium.jpg#100  
Atom
  
  
Number of Protons
47  
99+
65  
99+
Number of Neutrons
61  
99+
94  
37
Number of Electrons
47  
99+
65  
99+
Radius of an Atom
  
  
Atomic Radius
144.00 pm  
38
177.00 pm  
19
Covalent Radius
145.00 pm  
99+
194.00 pm  
16
Van der Waals Radius
172.00 pm  
99+
221.00 pm  
27
Atomic Weight
107.87 amu  
99+
158.93 amu  
99+
Atomic Volume
10.30 cm3/mol  
99+
19.20 cm3/mol  
34
Adjacent Atomic Numbers
  
  
Previous Element
Palladium
  
Gadolinium
  
Next Element
Cadmium
  
Dysprosium
  
Valence Electron Potential
11.40 (-eV)  
99+
46.80 (-eV)  
34
Lattice Constant
408.53 pm  
23
360.10 pm  
40
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.59  
26
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
10.49 g/cm3  
37
8.23 g/cm3  
99+
Density When Liquid (at m.p.)
9.32 g/cm3  
99+
7.65 g/cm3  
99+
Tensile Strength
170.00 MPa  
21
60.00 MPa  
35
Viscosity
0.00  
23
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
14
0.00 (Pa)  
31
Vapor Pressure at 2000 K
0.00 (Pa)  
38
12.50 (Pa)  
8
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
22.10 GPa  
99+
Bulk Modulus
100.00 GPa  
16
38.70 GPa  
40
Young's Modulus
83.00 GPa  
25
55.70 GPa  
37
Poisson Ratio
0.37  
7
0.26  
21
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.50  
39
8.23  
99+
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
32
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
15.87 nΩ·m  
99+
1.15 nΩ·m  
99+
Electrical Conductivity
0.63 106/cm Ω  
1
0.01 106/cm Ω  
99+
Electron Affinity
125.60 kJ/mol  
5
50.00 kJ/mol  
26
Thermal
Specific Heat
0.24 J/(kg K)  
25
0.18 J/(kg K)  
34
Molar Heat Capacity
25.35 J/mol·K  
99+
28.91 J/mol·K  
12
Thermal Conductivity
429.00 W/m·K  
1
11.10 W/m·K  
99+
Critical Temperature
1,235.00 K  
99+
1,629.00 K  
37
Thermal Expansion
18.90 µm/(m·K)  
25
10.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol  
99+
330.90 kJ/mol  
99+
Enthalpy of Fusion
11.30 kJ/mol  
37
10.80 kJ/mol  
40
Enthalpy of Atomization
284.50 kJ/mol  
99+
314.00 kJ/mol  
99+
Standard Molar Entropy
42.60 J/mol.K  
99+
73.20 J/mol.K  
10
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