Home
 Compare Metals

Platinum vs Polonium

Platinum
Polonium
Polonium vs Platinum


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

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!