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Platinum vs Thorium


Thorium vs Platinum


Periodic Table

Symbol
Pt   
Th   

Group Number
10   
8
0   
18

Period Number
6   
7   

Block
d block   
f block   

Element Family
Transition Metal   
Actinide   

CAS Number
7440064   
99+
7440326   
99+

Space Group Name
Fm_ 3m   
P63/mmc   

Space Group Number
225.00   
2
194.00   
5

Facts

Interesting Facts
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
  • Thorium metal is used as an alternate option over Uranium for nuclear fuel.
  • Thorium metals appearance (silvery white, soft) is somewhat similar to Lead metal.
  

Sources
Mining, Ores of metals, Ores of Minerals   
Found in Minerals, Mining   

History
  
  

Who Discovered
Antonio de Ulloa   
Jöns Jakob Berzelius   

Discovery
In 1735   
In 1829   

Abundance
  
  

Abundance In Universe
5 * 10-7 %   
19
3 * 10-4 %   
9

Abundance In Sun
~0.0000009 %   
19
~0.0004 %   
9

Abundance In Meteorites
0.00 %   
25
0.05 %   
11

Abundance In Earth's Crust
0.00 %   
99+
0.66 %   
7

Abundance In Oceans
Not Available   
0.00 %   
15

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.
  
  • Thorium metal is used as an allying agent for Magnesium, It imparts greater strength and resistance to temperature.
  • compound of this metal Thorium oxide is used as an industrial catalyst.
  

Industrial Uses
Aerospace Industry, Chemical Industry   
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   

Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
Dentistry, Surgical Instruments Manufacturing   

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

Biological Properties
  
  

Toxicity
Non Toxic   
Non Toxic   

Present in Human Body
No   
Yes   

In Blood
Not Available   
0.00 Blood/mg dm-3   
33

In Bone
Not Available   
0.02 p.p.m.   
29

Physical Properties

Melting Point
1,772.00 °C   
16
1,750.00 °C   
17

Boiling Point
3,827.00 °C   
15
4,790.00 °C   
8

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silver   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
3.50   
11
3.00   
12

Brinell Hardness
300.00 MPa   
34
390.00 MPa   
29

Vickers Hardness
400.00 MPa   
25
295.00 MPa   
29

Speed of Sound
2,800.00 m/s   
29
2,490.00 m/s   
36

Optical Properties
  
  

Reflectivity
73.00 %   
8
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
Pt   
Th   

Isotopes
  
  

Known Isotopes
35   
4
28   
11

Electronegativity
  
  

Pauling Electronegativity
2.28   
3
1.30   
32

Allred Rochow Electronegativity
1.44   
17
1.11   
29

Allen Electronegativity
1.72   
16
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.72   
99+
2.70   
22

Ionization Energies
  
  

1st Energy Level
870.00 kJ/mol   
10
587.00 kJ/mol   
99+

2nd Energy Level
1,791.00 kJ/mol   
21
1,110.00 kJ/mol   
99+

3rd Energy Level
Not Available   
1,978.00 kJ/mol   
99+

4th Energy Level
Not Available   
2,780.00 kJ/mol   
99+

Electrochemical Equivalent
1.82 g/amp-hr   
35
2.16 g/amp-hr   
24

Electron Work Function
5.65 eV   
1
3.41 eV   
32

Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization   
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
78   
38
90   
28

Electron Configuration
[Xe] 4f14 5d9 6s1   
[Rn] 6d2 7s2   

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

Crystal Lattice
FCC-Crystal-Structure-of-Platinum.jpg#100   
FCC-Crystal-Structure-of-Thorium.jpg#100   

Atom
  
  

Number of Protons
78   
38
90   
28

Number of Neutrons
117   
24
142   
15

Number of Electrons
78   
38
90   
28

Radius of an Atom
  
  

Atomic Radius
139.00 pm   
39
179.80 pm   
15

Covalent Radius
136.00 pm   
99+
206.00 pm   
7

Van der Waals Radius
175.00 pm   
36
237.00 pm   
15

Atomic Weight
47.87 amu   
99+
232.04 amu   
23

Atomic Volume
9.09 cm3/mol   
99+
19.90 cm3/mol   
20

Adjacent Atomic Numbers
  
  

Previous Element
Iridium
  
Actinium
  

Next Element
Gold
  

Valence Electron Potential
392.42 (-eV)   
1
59.30 (-eV)   
23

Lattice Constant
392.42 pm   
24
508.42 pm   
14

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
21.45 g/cm3   
11
11.72 g/cm3   
32

Density When Liquid (at m.p.)
19.77 g/cm3   
2
Not Available   

Tensile Strength
125.00 MPa   
14
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
0.07 (Pa)   
18
0.00 (Pa)   
22

Elasticity properties
  
  

Shear Modulus
61.00 GPa   
14
31.00 GPa   
21

Bulk Modulus
230.00 GPa   
6
54.00 GPa   
22

Young's Modulus
168.00 GPa   
14
79.00 GPa   
24

Poisson Ratio
0.38   
6
0.27   
20

Other Mechanical Properties
Ductile, Malleable   
Ductile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
21.45   
4
11.70   
23

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Permeability
0.00 H/m   
3
Not Available   

Electrical Properties
  
  

Electrical Property
Conductor   
Superconductor   

Resistivity
105.00 nΩ·m   
30
157.00 nΩ·m   
22

Electrical Conductivity
0.10 106/cm Ω   
21
0.07 106/cm Ω   
31

Electron Affinity
205.30 kJ/mol   
2
Not Available   

Thermal Properties

Specific Heat
0.13 J/(kg K)   
39
0.12 J/(kg K)   
40

Molar Heat Capacity
25.86 J/mol·K   
35
26.23 J/mol·K   
30

Thermal Conductivity
71.60 W/m·K   
24
54.00 W/m·K   
28

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
8.80 µm/(m·K)   
99+
11.00 µm/(m·K)   
36

Enthalpy
  
  

Enthalpy of Vaporization
510.50 kJ/mol   
11
429.00 kJ/mol   
15

Enthalpy of Fusion
19.70 kJ/mol   
12
15.48 kJ/mol   
19

Enthalpy of Atomization
565.00 kJ/mol   
11
468.60 kJ/mol   
15

Standard Molar Entropy
41.60 J/mol.K   
36
27.30 J/mol.K   
99+

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