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Gold Terbium Comparison

Gold
Terbium
Terbium Gold comparison


Periodic Table
Symbol
Au  
Tb  
Group Number
11  
7
3  
15
Period Number
6  
6  
Block
d block  
f block  
Element Family
Transition Metal  
Lanthanide  
CAS Number
7440575  
31
7440279  
99+
Space Group Name
Fm_ 3m  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
Facts
Interesting Facts
  • It is found in copper ores and from the crust of the earth.
  • It is the most malleable and ductile metal.
  • Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
  
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  
Sources
Earth's crust, Mining, Ores of metals  
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
Carl Gustaf Mosander  
Discovery
Before 6000 BCE  
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 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
40
Abundance In Oceans
0.00 %  
21
0.00 %  
99+
Abundance In Humans
0.00 %  
21
0.00 %  
24
Uses
Uses & Benefits
  • Gold metal is mainly used for Jewelry, bullion, coinage, etc.
  • It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
  
  • 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  
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  
38
0.00 Blood/mg dm-3  
37
In Bone
0.02 p.p.m.  
35
0.00 p.p.m.  
99+
Physical
Melting Point
1,064.43 °C  
99+
1,356.00 °C  
33
Boiling Point
2,807.00 °C  
37
3,123.00 °C  
30
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gold  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
1.50  
19
Brinell Hardness
194.00 MPa  
99+
677.00 MPa  
19
Vickers Hardness
216.00 MPa  
99+
863.00 MPa  
20
Speed of Sound
2,030.00 m/s  
99+
2,620.00 m/s  
99+
Optical Properties
  
  
Refractive Index
0.47  
99+
1.60  
32
Reflectivity
95.00 %  
2
35.00 %  
34
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Au  
Tb  
Isotopes
  
  
Known Isotopes
36  
3
26  
13
Electronegativity
  
  
Pauling Electronegativity
2.54  
2
1.20  
40
Sanderson Electronegativity
1.50  
18
1.20  
32
Allred Rochow Electronegativity
1.42  
19
1.10  
31
Mulliken-Jaffe Electronegativity
1.87  
15
1.20  
39
Allen Electronegativity
1.92  
7
1.20  
99+
Electropositivity
  
  
Pauling Electropositivity
1.46  
99+
2.20  
39
Ionization Energies
  
  
1st Energy Level
890.10 kJ/mol  
8
603.40 kJ/mol  
99+
2nd Energy Level
1,980.00 kJ/mol  
12
1,174.80 kJ/mol  
99+
3rd Energy Level
2,856.00 kJ/mol  
33
2,417.00 kJ/mol  
99+
4th Energy Level
890.10 kJ/mol  
99+
4,203.00 kJ/mol  
99+
5th Energy Level
8,901.00 kJ/mol  
6
5,658.00 kJ/mol  
99+
6th Energy Level
8,901.00 kJ/mol  
24
5,658.00 kJ/mol  
99+
7th Energy level
8,901.00 kJ/mol  
21
5,420.00 kJ/mol  
99+
8th Energy Level
8,900.00 kJ/mol  
20
5,650.00 kJ/mol  
99+
9th Energy Level
8,901.00 kJ/mol  
20
5,650.00 kJ/mol  
99+
10th Energy Level
8,901.00 kJ/mol  
21
5,650.00 kJ/mol  
99+
11th Energy Level
8,901.00 kJ/mol  
19
5,650.00 kJ/mol  
99+
12th Energy Level
8,900.00 kJ/mol  
39
5,650.00 kJ/mol  
99+
13th Energy Level
8,900.00 kJ/mol  
14
5,650.00 kJ/mol  
99+
14th Energy Level
890.10 kJ/mol  
99+
5,650.00 kJ/mol  
99+
15th Energy Level
89,000.00 kJ/mol  
7
56,500.00 kJ/mol  
99+
16th Energy Level
890.10 kJ/mol  
99+
56,500.00 kJ/mol  
99+
17th Energy Level
890.10 kJ/mol  
25
565.80 kJ/mol  
99+
18th Energy Level
8,901.00 kJ/mol  
14
5,658.00 kJ/mol  
99+
19th Energy Level
890.10 kJ/mol  
23
565.00 kJ/mol  
99+
20th Energy Level
890.00 kJ/mol  
13
565.00 kJ/mol  
99+
21st Energy Level
890.10 kJ/mol  
35
565.80 kJ/mol  
99+
22nd Energy Level
890.00 kJ/mol  
11
565.00 kJ/mol  
99+
23rd Energy Level
890.10 kJ/mol  
38
565.80 kJ/mol  
99+
24th Energy Level
890.10 kJ/mol  
6
565.80 kJ/mol  
99+
25th Energy Level
890.00 kJ/mol  
5
565.00 kJ/mol  
99+
26th Energy Level
890.10 kJ/mol  
5
565.80 kJ/mol  
99+
27th Energy Level
890.10 kJ/mol  
4
565.80 kJ/mol  
99+
28th Energy Level
890.10 kJ/mol  
7
565.80 kJ/mol  
99+
29th Energy Level
890.10 kJ/mol  
8
565.80 kJ/mol  
99+
30th Energy Level
890.10 kJ/mol  
5
565.00 kJ/mol  
99+
Electrochemical Equivalent
2.45 g/amp-hr  
25
1.98 g/amp-hr  
35
Electron Work Function
5.10 eV  
8
3.00 eV  
99+
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
79  
37
65  
99+
Electron Configuration
[Xe] 4f14 5d10 6s1  
[Xe] 4f9 6s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Gold.jpg#100  
HCP-Crystal-Structure-of-Terbium.jpg#100  
Atom
  
  
Number of Protons
79  
37
65  
99+
Number of Neutrons
118  
24
94  
37
Number of Electrons
79  
37
65  
99+
Radius of an Atom
  
  
Atomic Radius
151.00 pm  
34
177.00 pm  
19
Covalent Radius
144.00 pm  
99+
194.00 pm  
16
Van der Waals Radius
166.00 pm  
99+
221.00 pm  
27
Atomic Weight
196.97 amu  
33
158.93 amu  
99+
Atomic Volume
10.20 cm3/mol  
99+
19.20 cm3/mol  
34
Adjacent Atomic Numbers
  
  
Previous Element
Platinum
  
Gadolinium
  
Next Element
Mercury
  
Dysprosium
  
Valence Electron Potential
43.40 (-eV)  
99+
46.80 (-eV)  
34
Lattice Constant
407.82 pm  
24
360.10 pm  
40
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.61  
18
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
19.30 g/cm3  
15
8.23 g/cm3  
99+
Density When Liquid (at m.p.)
17.31 g/cm3  
16
7.65 g/cm3  
99+
Tensile Strength
120.00 MPa  
27
60.00 MPa  
35
Viscosity
0.00  
23
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
25
0.00 (Pa)  
31
Vapor Pressure at 2000 K
67.00 (Pa)  
4
12.50 (Pa)  
8
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
22.10 GPa  
99+
Bulk Modulus
180.00 GPa  
9
38.70 GPa  
40
Young's Modulus
79.00 GPa  
26
55.70 GPa  
37
Poisson Ratio
0.40  
4
0.26  
21
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
19.32  
17
8.23  
99+
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
10
0.00 H/m  
17
Susceptibility
0.00  
22
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
2.20 nΩ·m  
99+
1.15 nΩ·m  
99+
Electrical Conductivity
0.45 106/cm Ω  
3
0.01 106/cm Ω  
99+
Electron Affinity
222.80 kJ/mol  
1
50.00 kJ/mol  
26
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.18 J/(kg K)  
34
Molar Heat Capacity
25.42 J/mol·K  
99+
28.91 J/mol·K  
12
Thermal Conductivity
318.00 W/m·K  
3
11.10 W/m·K  
99+
Critical Temperature
1,337.00 K  
99+
1,629.00 K  
37
Thermal Expansion
14.20 µm/(m·K)  
29
10.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
324.40 kJ/mol  
99+
330.90 kJ/mol  
99+
Enthalpy of Fusion
12.55 kJ/mol  
33
10.80 kJ/mol  
40
Enthalpy of Atomization
364.00 kJ/mol  
34
314.00 kJ/mol  
99+
Standard Molar Entropy
47.40 J/mol.K  
99+
73.20 J/mol.K  
10
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