Lutetium Silver Comparison
Periodic Table
Symbol
Lu
Ag
Group Number
Not Available
11
7
Period Number
6
5
Block
f block
d block
Element Family
Lanthanide
Transition Metal
CAS Number
7439943
99+
7440224
99+
Space Group Name
P63/mmc
Fm_ 3m
Space Group Number
194.00
5
225.00
2
Facts
Interesting Facts
- Metal dust of Lutetium element is highly explosive.
- Lutetium metal is corrosion resistance and acts stable in air.
- 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, Ores of Minerals
Earth's crust, Found in Minerals, Ores of metals
History
Who Discovered
Georges Urbain and Carl Auer von Welsbach
Unknown
Discovery
In 1906
Before 5000 BC
Abundance
Abundance In Universe
1 * 10-8 %
30
6 * 10-8 %
26
Abundance In Sun
~0.0000001 %
26
~0.0000001 %
26
Abundance In Meteorites
0.00 %
99+
0.00 %
38
Abundance In Earth's Crust
0.00 %
99+
0.00 %
99+
Abundance In Oceans
0.00 %
99+
0.00 %
19
Uses
Uses & Benefits
- Lutetium metal is used outside research. It has commercial uses like Industrial catalyst for cracking oil refineries of hydrocarbons .
- Silver is mainly used for Jewelry and show piece.
- It is used for manufacturing high quality mirrors due to its reflectivity property.
Industrial Uses
NA
Chemical Industry, Clothing Industry, Electrical Industry
Medical Uses
NA
Dentistry, Pharmaceutical Industry
Other Uses
Alloys
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
Biological Properties
Toxicity
Low Toxic
Non Toxic
Present in Human Body
No
Yes
In Blood
Not Available
0.00 Blood/mg dm-3
29
In Bone
Not Available
0.44 p.p.m.
20
Physical Properties
Melting Point
1,652.00 °C
19
961.93 °C
99+
Boiling Point
3,402.00 °C
19
2,212.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Silvery White
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
Not Available
2.50
14
Brinell Hardness
893.00 MPa
10
251.00 MPa
37
Vickers Hardness
1,160.00 MPa
8
229.00 MPa
30
Speed of Sound
Not Available
2,680.00 m/s
34
Optical Properties
Reflectivity
Not Available
97.00 %
1
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Lu
Ag
Isotopes
Known Isotopes
35
4
36
3
Electronegativity
Pauling Electronegativity
1.27
34
1.93
9
Sanderson Electronegativity
Not Available
1.83
11
Allred Rochow Electronegativity
1.14
28
1.42
18
Mulliken-Jaffe Electronegativity
Not Available
1.47
15
Allen Electronegativity
Not Available
1.87
7
Electropositivity
Pauling Electropositivity
2.73
20
2.07
99+
Ionization Energies
1st Energy Level
523.50 kJ/mol
99+
731.00 kJ/mol
27
2nd Energy Level
1,340.00 kJ/mol
99+
2,070.00 kJ/mol
11
3rd Energy Level
2,022.30 kJ/mol
99+
3,361.00 kJ/mol
19
4th Energy Level
4,370.00 kJ/mol
28
Not Available
5th Energy Level
6,445.00 kJ/mol
21
Not Available
Electrochemical Equivalent
2.18 g/amp-hr
23
4.02 g/amp-hr
7
Electron Work Function
3.30 eV
33
4.26 eV
20
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Ionization, Solubility
Atomic Properties
Atomic Number
71
99+
47
99+
Electron Configuration
[Xe] 6s2 4f14 5d1
[Kr] 4d10 5s1
Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
FCC-Crystal-Structure-of-Silver.jpg#100
Atom
Number of Protons
71
99+
47
99+
Number of Neutrons
104
30
61
99+
Number of Electrons
71
99+
47
99+
Radius of an Atom
Atomic Radius
174.00 pm
20
144.00 pm
36
Covalent Radius
187.00 pm
20
145.00 pm
39
Van der Waals Radius
221.00 pm
22
172.00 pm
38
Atomic Weight
174.97 amu
40
107.87 amu
99+
Atomic Volume
17.78 cm3/mol
30
10.30 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
50.90 (-eV)
26
11.40 (-eV)
99+
Lattice Constant
350.31 pm
99+
408.53 pm
20
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
1.59
10
Not Available
Mechanical Properties
Density
Density At Room Temperature
9.84 g/cm3
38
10.49 g/cm3
35
Density When Liquid (at m.p.)
9.30 g/cm3
22
9.32 g/cm3
21
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa)
33
0.00 (Pa)
14
Vapor Pressure at 2000 K
3.18 (Pa)
11
Not Available
Elasticity properties
Shear Modulus
27.20 GPa
26
30.00 GPa
23
Bulk Modulus
47.60 GPa
23
100.00 GPa
16
Young's Modulus
68.60 GPa
30
83.00 GPa
23
Poisson Ratio
0.26
21
0.37
7
Other Mechanical Properties
NA
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
9.84
29
10.50
26
Magnetic Ordering
Paramagnetic
Diamagnetic
Susceptibility
Not Available
0.00
5
Electrical Properties
Electrical Property
Conductor
Conductor
Resistivity
582.00 nΩ·m
9
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
21
125.60 kJ/mol
5
Thermal Properties
Specific Heat
0.15 J/(kg K)
36
0.24 J/(kg K)
25
Molar Heat Capacity
26.86 J/mol·K
24
25.35 J/mol·K
99+
Thermal Conductivity
16.40 W/m·K
99+
429.00 W/m·K
1
Critical Temperature
Not Available
Not Available
Thermal Expansion
9.90 µm/(m·K)
40
18.90 µm/(m·K)
23
Enthalpy
Enthalpy of Vaporization
355.90 kJ/mol
22
255.10 kJ/mol
37
Enthalpy of Fusion
18.70 kJ/mol
13
11.30 kJ/mol
31
Enthalpy of Atomization
398.00 kJ/mol
20
284.50 kJ/mol
37
Standard Molar Entropy
51.00 J/mol.K
30
42.60 J/mol.K
35
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