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Francium vs Palladium

Francium
Palladium
Palladium vs Francium


Periodic Table
Symbol
Fr   
Pd   
Group Number
1   
17
10   
8
Period Number
7   
5   
Block
s block   
d block   
Element Family
Alkali   
Transition Metal   
CAS Number
7440735   
18
7440053   
99+
Space Group Name
Not Available   
Fm_ 3m   
Space Group Number
Not Available   
225.00   
2
Facts
Interesting Facts
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  
  • Palladium alloys are used for Jewelry contains (95% Palladium and 5% Ruthenium)
  • In the late 1800s, Palladium metal used have more economical value than the Platinum metal.
  • Palladium element is known as a good catalyst
  
Sources
Formed by Decay Process, Mining   
Ores of metals   
History
  
  
Who Discovered
Marguerite Perey   
William Hyde Wollaston   
Discovery
In 1939   
In 1803   
Abundance
  
  
Abundance In Universe
Not Available   
2 * 10-7 %   
22
Abundance In Sun
~-9999 %   
~0.0000003 %   
24
Abundance In Meteorites
Not Available   
0.00 %   
99+
Abundance In Earth's Crust
Not Available   
0.00 %   
99+
Uses
Uses & Benefits
  • Francium has no known uses as it has a half life of only 22 minutes.
  
  • Mostly palladium metal is used in catalytic converters. In electronic industry it is used in ceramic capacitors of mobile and computer.
  • It is used in jewellery and dental fillings and crowns.
  
Industrial Uses
NA   
Aerospace Industry, Automobile Industry, Electronic Industry   
Medical Uses
NA   
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
Other Uses
NA   
Coinage, Bullion, Jewellery   
Biological Properties
  
  
Toxicity
NA   
Toxic   
Present in Human Body
No   
No   
In Blood
0.00 Blood/mg dm-3   
37
Not Available   
In Bone
0.00 p.p.m.   
36
Not Available   
Physical Properties
Melting Point
27.00 °C   
99+
1,554.90 °C   
22
Boiling Point
677.00 °C   
99+
2,963.00 °C   
33
Appearance
  
  
Physical State
Solid   
Solid   
Color
NA   
Silver   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
4.75   
9
Brinell Hardness
Not Available   
320.00 MPa   
33
Vickers Hardness
Not Available   
121.00 MPa   
36
Speed of Sound
Not Available   
3,070.00 m/s   
26
Optical Properties
  
  
Refractive Index
Not Available   
1.72   
1
Reflectivity
Not Available   
84.00 %   
4
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
Fr   
Pd   
Isotopes
  
  
Known Isotopes
33   
6
38   
1
Electronegativity
  
  
Pauling Electronegativity
0.70   
99+
2.20   
4
Allred Rochow Electronegativity
0.86   
99+
1.35   
21
Mulliken-Jaffe Electronegativity
0.68   
25
Not Available   
Allen Electronegativity
0.67   
99+
1.59   
22
Electropositivity
  
  
Pauling Electropositivity
3.30   
1
1.80   
99+
Ionization Energies
  
  
1st Energy Level
380.00 kJ/mol   
99+
520.23 kJ/mol   
99+
2nd Energy Level
Not Available   
7,298.22 kJ/mol   
2
3rd Energy Level
Not Available   
11,815.13 kJ/mol   
3
Electrochemical Equivalent
8.32 g/amp-hr   
1
1.99 g/amp-hr   
30
Electron Work Function
Not Available   
5.12 eV   
3
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Chemical Stability, Corrosion, Ionization, Solubility   
Atomic Properties
Atomic Number
87   
31
46   
99+
Electron Configuration
[Rn] 7s1   
[Kr] 4d10   
Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Palladium.jpg#100   
Atom
  
  
Number of Protons
87   
31
46   
99+
Number of Neutrons
136   
17
60   
99+
Number of Electrons
87   
31
46   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
137.00 pm   
40
Covalent Radius
260.00 pm   
1
139.00 pm   
99+
Van der Waals Radius
348.00 pm   
1
163.00 pm   
40
Atomic Weight
223.00 amu   
27
106.42 amu   
99+
Atomic Volume
Not Available   
8.90 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Polonium
  
Rhodium
  
Next Element
Radium
  
Silver
  
Valence Electron Potential
8.00 (-eV)   
99+
33.00 (-eV)   
99+
Lattice Constant
Not Available   
389.07 pm   
25
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
1.87 g/cm3   
99+
12.02 g/cm3   
29
Density When Liquid (at m.p.)
Not Available   
10.38 g/cm3   
17
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
27
Vapor Pressure at 2000 K
Not Available   
0.00 (Pa)   
30
Elasticity properties
  
  
Shear Modulus
Not Available   
44.00 GPa   
17
Bulk Modulus
Not Available   
180.00 GPa   
9
Young's Modulus
Not Available   
121.00 GPa   
16
Poisson Ratio
Not Available   
0.39   
5
Other Mechanical Properties
NA   
Ductile, Malleable, Weldable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
12.02   
21
Magnetic Ordering
Paramagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Poor Conductor   
Conductor   
Resistivity
3.00 nΩ·m   
99+
105.40 nΩ·m   
29
Electrical Conductivity
0.03 106/cm Ω   
40
0.10 106/cm Ω   
22
Electron Affinity
Not Available   
54.23 kJ/mol   
17
Thermal Properties
Specific Heat
Not Available   
0.24 J/(kg K)   
23
Molar Heat Capacity
Not Available   
25.98 J/mol·K   
33
Thermal Conductivity
15.00 W/m·K   
99+
71.80 W/m·K   
23
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
11.80 µm/(m·K)   
33
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
376.60 kJ/mol   
19
Enthalpy of Fusion
Not Available   
16.74 kJ/mol   
18
Enthalpy of Atomization
71.00 kJ/mol   
99+
393.30 kJ/mol   
22
Standard Molar Entropy
Not Available   
37.60 J/mol.K   
40
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