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Lawrencium Silver Comparison


Silver Lawrencium comparison


Periodic Table

Symbol
Lr   
Ag   

Group Number
Not Available   
11   
7

Period Number
7   
5   

Block
d block   
d block   

Element Family
Actinide   
Transition Metal   

CAS Number
22537195   
15
7440224   
99+

Space Group Name
Not Available   
Fm_ 3m   

Space Group Number
Not Available   
225.00   
2

Facts

Interesting Facts
  • It is synthetically produced metal.
  • Radiation hazard can be produce by it.
  
  • 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
Bombarding Californium-252 with Boron Nuclei, Found in Minerals, Mining   
Earth's crust, Found in Minerals, Ores of metals   

History
  
  

Who Discovered
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research   
Unknown   

Discovery
In 1961–1971   
Before 5000 BC   

Abundance
  
  

Abundance In Universe
Not Available   
6 * 10-8 %   
26

Abundance In Sun
~-9999 %   
~0.0000001 %   
26

Abundance In Meteorites
Not Available   
0.00 %   
38

Abundance In Earth's Crust
Not Available   
0.00 %   
99+

Abundance In Oceans
Not Available   
0.00 %   
19

Uses

Uses & Benefits
  • Currently known uses of Lawrencium metal are limited to research purpose only.
  
  • 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
NA   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Unknown   
Non Toxic   

Present in Human Body
No   
Yes   

In Blood
0.00 Blood/mg dm-3   
37
0.00 Blood/mg dm-3   
29

In Bone
0.00 p.p.m.   
36
0.44 p.p.m.   
20

Physical Properties

Melting Point
1,627.00 °C   
20
961.93 °C   
99+

Boiling Point
Not Available   
2,212.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Silvery White   

Luster
Unknown Luster   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
2.50   
14

Brinell Hardness
Not Available   
251.00 MPa   
37

Vickers Hardness
Not Available   
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
Lr   
Ag   

Isotopes
  
  

Known Isotopes
10   
28
36   
3

Electronegativity
  
  

Pauling Electronegativity
Not Available   
1.93   
9

Sanderson Electronegativity
Not Available   
1.83   
11

Allred Rochow Electronegativity
Not Available   
1.42   
18

Mulliken-Jaffe Electronegativity
Not Available   
1.47   
15

Allen Electronegativity
Not Available   
1.87   
7

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.07   
99+

Ionization Energies
  
  

1st Energy Level
470.00 kJ/mol   
99+
731.00 kJ/mol   
27

2nd Energy Level
1,428.00 kJ/mol   
99+
2,070.00 kJ/mol   
11

3rd Energy Level
2,228.00 kJ/mol   
99+
3,361.00 kJ/mol   
19

4th Energy Level
4,910.00 kJ/mol   
21
Not Available   

Electrochemical Equivalent
3.23 g/amp-hr   
11
4.02 g/amp-hr   
7

Electron Work Function
Not Available   
4.26 eV   
20

Other Chemical Properties
Ionization, Radioactive Isotopes   
Chemical Stability, Ionization, Solubility   

Atomic Properties

Atomic Number
103   
15
47   
99+

Electron Configuration
[Rn] 5f14 7s2 7p1   
[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
103   
15
47   
99+

Number of Neutrons
157   
7
61   
99+

Number of Electrons
103   
15
47   
99+

Radius of an Atom
  
  

Atomic Radius
Not Available   
144.00 pm   
36

Covalent Radius
Not Available   
145.00 pm   
39

Van der Waals Radius
246.00 pm   
8
172.00 pm   
38

Atomic Weight
266.00 amu   
12
107.87 amu   
99+

Atomic Volume
Not Available   
10.30 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Nobelium
  
Palladium
  

Next Element
Cadmium
  

Valence Electron Potential
Not Available   
11.40 (-eV)   
99+

Lattice Constant
Not Available   
408.53 pm   
20

Lattice Angles
NA   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
Not Available   
10.49 g/cm3   
35

Density When Liquid (at m.p.)
Not Available   
9.32 g/cm3   
21

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
14

Elasticity properties
  
  

Shear Modulus
Not Available   
30.00 GPa   
23

Bulk Modulus
Not Available   
100.00 GPa   
16

Young's Modulus
Not Available   
83.00 GPa   
23

Poisson Ratio
0.32   
12
0.37   
7

Other Mechanical Properties
Unknown   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
10.50   
26

Magnetic Ordering
Unknown   
Diamagnetic   

Susceptibility
Not Available   
0.00   
5

Electrical Properties
  
  

Electrical Property
Unknown   
Conductor   

Resistivity
Not Available   
15.87 nΩ·m   
99+

Electrical Conductivity
Not Available   
0.63 106/cm Ω   
1

Electron Affinity
Not Available   
125.60 kJ/mol   
5

Thermal Properties

Specific Heat
Not Available   
0.24 J/(kg K)   
25

Molar Heat Capacity
Not Available   
25.35 J/mol·K   
99+

Thermal Conductivity
Not Available   
429.00 W/m·K   
1

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
18.90 µm/(m·K)   
23

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
255.10 kJ/mol   
37

Enthalpy of Fusion
Not Available   
11.30 kJ/mol   
31

Enthalpy of Atomization
Not Available   
284.50 kJ/mol   
37

Standard Molar Entropy
Not Available   
42.60 J/mol.K   
35

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