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Polonium vs Platinum

Polonium
Platinum
Platinum vs Polonium


Periodic Table
Symbol
Po  
Pt  
Group Number
16  
2
10  
8
Period Number
6  
6  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7440086  
99+
7440064  
99+
Space Group Name
Pm-3m  
Fm_ 3m  
Space Group Number
221.00  
4
225.00  
3
Facts
Interesting Facts
  • Polonium was the first radioactive element to be discovered.
  • Polonium element and its compounds are highly radioactive.
  • Its alloy with Beryllium provides source of neutrons.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Mining, Ores of metals  
Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Pierre Curie and Marie Curie  
Antonio de Ulloa  
Discovery
In 1898  
In 1735  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
20
Abundance In Sun
-  
0.00 %  
19
Abundance In Meteorites
-  
0.00 %  
25
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
99+
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
  • A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
Aerospace Industry, Ammunition Industry  
Aerospace Industry, Chemical Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
Other Uses
Alloys  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Highly Toxic  
Non Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
254.00 °C  
99+
1,772.00 °C  
16
Boiling Point
962.00 °C  
99+
3,827.00 °C  
15
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Silvery White  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
3.50  
12
Brinell Hardness
70.00 MPa  
99+
300.00 MPa  
99+
Vickers Hardness
30.00 MPa  
99+
400.00 MPa  
99+
Speed of Sound
2,260.00 m/s  
99+
2,800.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.70  
3
2.41  
6
Reflectivity
50.00 %  
31
73.00 %  
10
Allotropes
Yes  
No  
α Allotropes
α-polonium  
-  
β Allotropes
β-polonium  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Po  
Pt  
Isotopes
  
  
Known Isotopes
29  
10
35  
4
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
2.28  
4
Sanderson Electronegativity
2.00  
10
2.28  
5
Allred Rochow Electronegativity
1.76  
3
1.44  
18
Mulliken-Jaffe Electronegativity
2.48  
1
2.20  
6
Allen Electronegativity
2.19  
2
1.72  
19
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
1.72  
99+
Ionization Energies
  
  
1st Energy Level
812.10 kJ/mol  
14
870.00 kJ/mol  
10
2nd Energy Level
1,833.20 kJ/mol  
17
1,791.00 kJ/mol  
22
3rd Energy Level
812.10 kJ/mol  
99+
2,277.00 kJ/mol  
99+
4th Energy Level
8,121.00 kJ/mol  
7
8,702.00 kJ/mol  
6
5th Energy Level
8,120.00 kJ/mol  
12
8,702.00 kJ/mol  
9
6th Energy Level
8,120.00 kJ/mol  
32
8,700.00 kJ/mol  
27
7th Energy level
8,120.00 kJ/mol  
26
8,700.00 kJ/mol  
23
8th Energy Level
8,120.00 kJ/mol  
26
8,700.00 kJ/mol  
23
9th Energy Level
8,120.00 kJ/mol  
23
5,660.00 kJ/mol  
99+
10th Energy Level
8,120.00 kJ/mol  
27
8,700.00 kJ/mol  
24
11th Energy Level
8,120.00 kJ/mol  
26
8,700.00 kJ/mol  
21
12th Energy Level
8,120.00 kJ/mol  
99+
8,700.00 kJ/mol  
99+
13th Energy Level
8,120.00 kJ/mol  
19
8,700.00 kJ/mol  
16
14th Energy Level
8,120.00 kJ/mol  
18
870.00 kJ/mol  
99+
15th Energy Level
81,200.00 kJ/mol  
15
87,000.00 kJ/mol  
9
16th Energy Level
81,200.00 kJ/mol  
12
870.00 kJ/mol  
99+
17th Energy Level
812.10 kJ/mol  
32
870.00 kJ/mol  
27
18th Energy Level
8,120.00 kJ/mol  
21
8,700.00 kJ/mol  
16
19th Energy Level
812.10 kJ/mol  
29
870.00 kJ/mol  
25
20th Energy Level
812.00 kJ/mol  
22
870.00 kJ/mol  
15
21st Energy Level
812.10 kJ/mol  
40
870.00 kJ/mol  
38
22nd Energy Level
812.00 kJ/mol  
17
870.00 kJ/mol  
13
23rd Energy Level
812.10 kJ/mol  
99+
870.10 kJ/mol  
39
24th Energy Level
812.10 kJ/mol  
13
870.00 kJ/mol  
9
25th Energy Level
812.10 kJ/mol  
11
870.00 kJ/mol  
7
26th Energy Level
812.10 kJ/mol  
11
870.00 kJ/mol  
7
27th Energy Level
812.10 kJ/mol  
10
870.10 kJ/mol  
6
28th Energy Level
812.10 kJ/mol  
16
870.10 kJ/mol  
9
29th Energy Level
812.10 kJ/mol  
15
870.00 kJ/mol  
10
30th Energy Level
812.00 kJ/mol  
11
870.00 kJ/mol  
7
Electrochemical Equivalent
3.90 g/amp-hr  
8
1.82 g/amp-hr  
39
Electron Work Function
4.50 eV  
19
5.65 eV  
4
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Chemical Stability, Anti Corrosion, Ionization  
Atomic
Atomic Number
84  
32
78  
38
Electron Configuration
[Xe] 4f14 5d10 6s2 6p4  
[Xe] 4f14 5d9 6s1  
Crystal Structure
Monoclinic (MON)  
Face Centered Cubic (FCC)  
Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100  
FCC-Crystal-Structure-of-Platinum.jpg#100  
Atom
  
  
Number of Protons
84  
32
78  
38
Number of Neutrons
125  
20
117  
25
Number of Electrons
84  
32
78  
38
Radius of an Atom
  
  
Atomic Radius
168.00 pm  
25
139.00 pm  
99+
Covalent Radius
140.00 pm  
99+
136.00 pm  
99+
Van der Waals Radius
197.00 pm  
36
175.00 pm  
99+
Atomic Weight
209.00 amu  
28
47.87 amu  
99+
Atomic Volume
22.23 cm3/mol  
22
9.09 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Bismuth
  
Iridium
  
Next Element
Francium
  
Gold
  
Valence Electron Potential
9.30 (-eV)  
99+
392.42 (-eV)  
1
Lattice Constant
335.90 pm  
99+
392.42 pm  
27
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.46  
99+
1.56  
99+
Mechanical
Density
  
  
Density At Room Temperature
9.20 g/cm3  
99+
21.45 g/cm3  
11
Density When Liquid (at m.p.)
9.40 g/cm3  
99+
19.77 g/cm3  
12
Tensile Strength
50.00 MPa  
38
125.00 MPa  
26
Viscosity
0.00  
26
0.00  
16
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.07 (Pa)  
18
Elasticity properties
  
  
Shear Modulus
24.00 GPa  
40
61.00 GPa  
14
Bulk Modulus
46.00 GPa  
28
230.00 GPa  
6
Young's Modulus
46.00 GPa  
99+
168.00 GPa  
15
Poisson Ratio
0.23  
30
0.38  
6
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
9.32  
99+
21.45  
13
Magnetic Ordering
Nonmagnetic  
Paramagnetic  
Permeability
0.00 H/m  
15
0.00 H/m  
14
Susceptibility
0.00  
24
0.00  
20
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
0.40 nΩ·m  
99+
105.00 nΩ·m  
30
Electrical Conductivity
0.02 106/cm Ω  
99+
0.10 106/cm Ω  
26
Electron Affinity
183.30 kJ/mol  
3
205.30 kJ/mol  
2
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
26.40 J/mol·K  
36
25.86 J/mol·K  
99+
Thermal Conductivity
20.00 W/m·K  
99+
71.60 W/m·K  
24
Critical Temperature
527.00 K  
99+
2,041.00 K  
19
Thermal Expansion
23.50 µm/(m·K)  
16
8.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
60.30 kJ/mol  
99+
510.50 kJ/mol  
15
Enthalpy of Fusion
13.00 kJ/mol  
32
19.70 kJ/mol  
12
Enthalpy of Atomization
134.00 kJ/mol  
99+
565.00 kJ/mol  
15
Standard Molar Entropy
41.10 J/mol.K  
99+
41.60 J/mol.K  
99+
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