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Gold vs Gadolinium

Gold
Gadolinium
Gadolinium vs Gold


Periodic Table
Symbol
Au  
Gd  
Group Number
11  
7
0  
18
Period Number
6  
6  
Block
d block  
f block  
Element Family
Transition Metal  
Lanthanide  
CAS Number
7440575  
31
7440542  
33
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.
  
  • Gadolinium is not found free in nature, hence it is not a native metal.
  • Gadolinium metal found in minerals like Monazite and Bastnaesite.
  
Sources
Earth's crust, Mining, Ores of metals  
Found in Minerals, Mining  
History
  
  
Who Discovered
-  
Jean Charles Galissard de Marignac  
Discovery
Before 6000 BCE  
In 1880  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
23
Abundance In Sun
0.00 %  
26
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
34
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
30
Abundance In Oceans
0.00 %  
21
0.00 %  
38
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.
  
  • Its alloys are also used in making Magnets, electronic components and Data storage devices.
  • Compound of Gadolinium metal are used in magnetic resonance imaging (MRI).
  
Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry, Electronic 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  
Non Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
38
0.00 Blood/mg dm-3  
40
In Bone
0.02 p.p.m.  
35
0.00 p.p.m.  
99+
Physical
Melting Point
1,064.43 °C  
99+
1,311.00 °C  
35
Boiling Point
2,807.00 °C  
37
3,233.00 °C  
26
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gold  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
4.50  
10
Brinell Hardness
194.00 MPa  
99+
700.00 MPa  
17
Vickers Hardness
216.00 MPa  
99+
510.00 MPa  
34
Speed of Sound
2,030.00 m/s  
99+
2,680.00 m/s  
99+
Optical Properties
  
  
Refractive Index
0.47  
99+
1.97  
16
Reflectivity
95.00 %  
2
59.00 %  
24
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Au  
Gd  
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
1.11  
30
Mulliken-Jaffe Electronegativity
1.87  
15
1.20  
39
Allen Electronegativity
1.92  
7
1.20  
99+
Electropositivity
  
  
Pauling Electropositivity
1.46  
99+
2.80  
15
Ionization Energies
  
  
1st Energy Level
890.10 kJ/mol  
8
593.40 kJ/mol  
99+
2nd Energy Level
1,980.00 kJ/mol  
12
1,170.00 kJ/mol  
99+
3rd Energy Level
2,856.00 kJ/mol  
33
1,990.00 kJ/mol  
99+
4th Energy Level
890.10 kJ/mol  
99+
4,250.00 kJ/mol  
40
5th Energy Level
8,901.00 kJ/mol  
6
5,930.00 kJ/mol  
99+
6th Energy Level
8,901.00 kJ/mol  
24
5,930.00 kJ/mol  
99+
7th Energy level
8,901.00 kJ/mol  
21
5,930.00 kJ/mol  
99+
8th Energy Level
8,900.00 kJ/mol  
20
5,930.00 kJ/mol  
99+
9th Energy Level
8,901.00 kJ/mol  
20
5,930.00 kJ/mol  
99+
10th Energy Level
8,901.00 kJ/mol  
21
5,930.00 kJ/mol  
99+
11th Energy Level
8,901.00 kJ/mol  
19
5,930.00 kJ/mol  
99+
12th Energy Level
8,900.00 kJ/mol  
39
59,300.00 kJ/mol  
17
13th Energy Level
8,900.00 kJ/mol  
14
5,930.00 kJ/mol  
99+
14th Energy Level
890.10 kJ/mol  
99+
5,930.00 kJ/mol  
36
15th Energy Level
89,000.00 kJ/mol  
7
59,300.00 kJ/mol  
99+
16th Energy Level
890.10 kJ/mol  
99+
59,300.00 kJ/mol  
37
17th Energy Level
890.10 kJ/mol  
25
594.10 kJ/mol  
99+
18th Energy Level
8,901.00 kJ/mol  
14
5,930.00 kJ/mol  
99+
19th Energy Level
890.10 kJ/mol  
23
593.40 kJ/mol  
99+
20th Energy Level
890.00 kJ/mol  
13
594.00 kJ/mol  
99+
21st Energy Level
890.10 kJ/mol  
35
593.40 kJ/mol  
99+
22nd Energy Level
890.00 kJ/mol  
11
593.00 kJ/mol  
99+
23rd Energy Level
890.10 kJ/mol  
38
593.40 kJ/mol  
99+
24th Energy Level
890.10 kJ/mol  
6
593.40 kJ/mol  
99+
25th Energy Level
890.00 kJ/mol  
5
593.00 kJ/mol  
99+
26th Energy Level
890.10 kJ/mol  
5
593.40 kJ/mol  
99+
27th Energy Level
890.10 kJ/mol  
4
593.40 kJ/mol  
99+
28th Energy Level
890.10 kJ/mol  
7
593.40 kJ/mol  
99+
29th Energy Level
890.10 kJ/mol  
8
593.40 kJ/mol  
99+
30th Energy Level
890.10 kJ/mol  
5
593.40 kJ/mol  
99+
Electrochemical Equivalent
2.45 g/amp-hr  
25
1.96 g/amp-hr  
36
Electron Work Function
5.10 eV  
8
3.10 eV  
99+
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Corrosion, Flammable, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
79  
37
64  
99+
Electron Configuration
[Xe] 4f14 5d10 6s1  
[Xe] 4f7 5d1 6s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Gold.jpg#100  
HCP-Crystal-Structure-of-Gadolinium.jpg#100  
Atom
  
  
Number of Protons
79  
37
64  
99+
Number of Neutrons
118  
24
93  
38
Number of Electrons
79  
37
64  
99+
Radius of an Atom
  
  
Atomic Radius
151.00 pm  
34
180.00 pm  
16
Covalent Radius
144.00 pm  
99+
196.00 pm  
14
Van der Waals Radius
166.00 pm  
99+
237.00 pm  
19
Atomic Weight
196.97 amu  
33
47.87 amu  
99+
Atomic Volume
10.20 cm3/mol  
99+
19.90 cm3/mol  
32
Adjacent Atomic Numbers
  
  
Previous Element
Platinum
  
Europium
  
Next Element
Mercury
  
Terbium
  
Valence Electron Potential
43.40 (-eV)  
99+
46.10 (-eV)  
35
Lattice Constant
407.82 pm  
24
363.60 pm  
35
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.61  
18
1.59  
29
Mechanical
Density
  
  
Density At Room Temperature
19.30 g/cm3  
15
7.90 g/cm3  
99+
Density When Liquid (at m.p.)
17.31 g/cm3  
16
7.40 g/cm3  
99+
Tensile Strength
120.00 MPa  
27
158.00 MPa  
23
Viscosity
0.00  
23
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
25
0.00 (Pa)  
32
Vapor Pressure at 2000 K
67.00 (Pa)  
4
7.39 (Pa)  
9
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
21.80 GPa  
99+
Bulk Modulus
180.00 GPa  
9
37.90 GPa  
99+
Young's Modulus
79.00 GPa  
26
54.80 GPa  
38
Poisson Ratio
0.40  
4
0.26  
23
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
19.32  
17
7.90  
99+
Magnetic Ordering
Diamagnetic  
Ferromagnetic  
Permeability
0.00 H/m  
10
0.00 H/m  
12
Susceptibility
0.00  
22
0.00  
4
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
2.20 nΩ·m  
99+
1.31 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
0.23 J/(kg K)  
27
Molar Heat Capacity
25.42 J/mol·K  
99+
37.03 J/mol·K  
3
Thermal Conductivity
318.00 W/m·K  
3
10.60 W/m·K  
99+
Critical Temperature
1,337.00 K  
99+
1,585.00 K  
38
Thermal Expansion
14.20 µm/(m·K)  
29
9.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
324.40 kJ/mol  
99+
359.40 kJ/mol  
30
Enthalpy of Fusion
12.55 kJ/mol  
33
10.05 kJ/mol  
99+
Enthalpy of Atomization
364.00 kJ/mol  
34
352.00 kJ/mol  
36
Standard Molar Entropy
47.40 J/mol.K  
99+
68.10 J/mol.K  
16
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