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Silver Europium Comparison


Europium Silver comparison


Periodic Table

Symbol
Ag   
Eu   

Group Number
11   
7
Not Available   

Period Number
5   
6   

Block
d block   
f block   

Element Family
Transition Metal   
Lanthanide   

CAS Number
7440224   
99+
7440531   
34

Space Group Name
Fm_ 3m   
Im_ 3m   

Space Group Number
225.00   
2
229.00   
1

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.
  
Not Available   

Sources
Earth's crust, Found in Minerals, Ores of metals   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Unknown   
Eugène-Anatole Demarçay   

Discovery
Before 5000 BC   
In 1896   

Abundance
  
  

Abundance In Universe
6 * 10-8 %   
26
5 * 10-8 %   
27

Abundance In Sun
~0.0000001 %   
26
~0.00000005 %   
27

Abundance In Meteorites
0.00 %   
38
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
36

Abundance In Oceans
0.00 %   
19
0.00 %   
99+

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.
  
  • Europium metals main uses is in the printing of euro banknotes. These notes glow red under UV light.
  • It is used in low energy light bulbs.
  

Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry   
Chemical Industry   

Medical Uses
Dentistry, Pharmaceutical Industry   
NA   

Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Non Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.00 Blood/mg dm-3   
29
Not Available   

In Bone
0.44 p.p.m.   
20
Not Available   

Physical Properties

Melting Point
961.93 °C   
99+
822.00 °C   
99+

Boiling Point
2,212.00 °C   
99+
1,597.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
Metallic   
Lustrous   

Hardness
  
  

Mohs Hardness
2.50   
14
Not Available   

Brinell Hardness
251.00 MPa   
37
Not Available   

Vickers Hardness
229.00 MPa   
30
167.00 MPa   
34

Speed of Sound
2,680.00 m/s   
34
Not Available   

Optical Properties
  
  

Reflectivity
97.00 %   
1
Not Available   

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
Ag   
Eu   

Isotopes
  
  

Known Isotopes
36   
3
31   
8

Electronegativity
  
  

Pauling Electronegativity
1.93   
9
1.20   
39

Sanderson Electronegativity
1.83   
11
1.01   
22

Allred Rochow Electronegativity
1.42   
18
Not Available   

Mulliken-Jaffe Electronegativity
1.47   
15
Not Available   

Allen Electronegativity
1.87   
7
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.07   
99+
Not Available   

Ionization Energies
  
  

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

2nd Energy Level
2,070.00 kJ/mol   
11
1,085.00 kJ/mol   
99+

3rd Energy Level
3,361.00 kJ/mol   
19
2,404.00 kJ/mol   
99+

4th Energy Level
Not Available   
4,120.00 kJ/mol   
33

Electrochemical Equivalent
4.02 g/amp-hr   
7
1.89 g/amp-hr   
33

Electron Work Function
4.26 eV   
20
2.50 eV   
99+

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

Atomic Properties

Atomic Number
47   
99+
63   
99+

Electron Configuration
[Kr] 4d10 5s1   
[Xe] 4f7 6s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
47   
99+
63   
99+

Number of Neutrons
61   
99+
89   
38

Number of Electrons
47   
99+
63   
99+

Radius of an Atom
  
  

Atomic Radius
144.00 pm   
36
180.00 pm   
14

Covalent Radius
145.00 pm   
39
198.00 pm   
13

Van der Waals Radius
172.00 pm   
38
233.00 pm   
18

Atomic Weight
107.87 amu   
99+
151.96 amu   
99+

Atomic Volume
10.30 cm3/mol   
99+
28.90 cm3/mol   
8

Adjacent Atomic Numbers
  
  

Previous Element
Palladium
  
Samarium
  

Next Element
Cadmium
  
Gadolinium
  

Valence Electron Potential
11.40 (-eV)   
99+
45.60 (-eV)   
35

Lattice Constant
408.53 pm   
20
458.10 pm   
17

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
10.49 g/cm3   
35
5.26 g/cm3   
99+

Density When Liquid (at m.p.)
9.32 g/cm3   
21
5.13 g/cm3   
99+

Tensile Strength
Not Available   
120.00 MPa   
15

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
14
19.40 (Pa)   
4

Elasticity properties
  
  

Shear Modulus
30.00 GPa   
23
7.90 GPa   
99+

Bulk Modulus
100.00 GPa   
16
8.30 GPa   
99+

Young's Modulus
83.00 GPa   
23
18.20 GPa   
99+

Poisson Ratio
0.37   
7
0.15   
34

Other Mechanical Properties
Ductile, Malleable   
Ductile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
10.50   
26
5.24   
99+

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Susceptibility
0.00   
5
Not Available   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
15.87 nΩ·m   
99+
0.90 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   
21

Thermal Properties

Specific Heat
0.24 J/(kg K)   
25
0.18 J/(kg K)   
33

Molar Heat Capacity
25.35 J/mol·K   
99+
27.66 J/mol·K   
16

Thermal Conductivity
429.00 W/m·K   
1
13.90 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
18.90 µm/(m·K)   
23
35.00 µm/(m·K)   
8

Enthalpy
  
  

Enthalpy of Vaporization
255.10 kJ/mol   
37
143.50 kJ/mol   
99+

Enthalpy of Fusion
11.30 kJ/mol   
31
9.21 kJ/mol   
37

Enthalpy of Atomization
284.50 kJ/mol   
37
180.00 kJ/mol   
99+

Standard Molar Entropy
42.60 J/mol.K   
35
77.80 J/mol.K   
4

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