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Actinium Platinum Comparison


Platinum Actinium comparison


Periodic Table

Symbol
Ac   
Pt   

Group Number
Not Available   
10   
8

Period Number
7   
6   

Block
f block   
d block   

Element Family
Actinide   
Transition Metal   

CAS Number
7440348   
99+
7440064   
99+

Space Group Name
Fm_ 3m   
Fm_ 3m   

Space Group Number
225.00   
2
225.00   
2

Facts

Interesting Facts
Not Available   
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  

Sources
Obtained by Treating Radium with Neutrons, Ores of metals   
Mining, Ores of metals, Ores of Minerals   

History
  
  

Who Discovered
Friedrich Oskar Giesel   
Antonio de Ulloa   

Discovery
In 1902   
In 1735   

Abundance
  
  

Abundance In Universe
Not Available   
5 * 10-7 %   
19

Abundance In Sun
~-9999 %   
~0.0000009 %   
19

Abundance In Meteorites
Not Available   
0.00 %   
25

Abundance In Earth's Crust
Not Available   
0.00 %   
99+

Uses

Uses & Benefits
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  

Industrial Uses
NA   
Aerospace Industry, Chemical Industry   

Medical Uses
NA   
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   

Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Toxic   
Non 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
1,227.00 °C   
38
1,772.00 °C   
16

Boiling Point
3,200.00 °C   
26
3,827.00 °C   
15

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
NA   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
3.50   
11

Brinell Hardness
Not Available   
300.00 MPa   
34

Vickers Hardness
Not Available   
400.00 MPa   
25

Speed of Sound
Not Available   
2,800.00 m/s   
29

Optical Properties
  
  

Reflectivity
Not Available   
73.00 %   
8

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
Ac   
Pt   

Isotopes
  
  

Known Isotopes
29   
10
35   
4

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
2.28   
3

Allred Rochow Electronegativity
1.00   
36
1.44   
17

Allen Electronegativity
Not Available   
1.72   
16

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
1.72   
99+

Ionization Energies
  
  

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

2nd Energy Level
1,170.00 kJ/mol   
99+
1,791.00 kJ/mol   
21

3rd Energy Level
1,900.00 kJ/mol   
99+
Not Available   

4th Energy Level
4,700.00 kJ/mol   
23
Not Available   

Electrochemical Equivalent
2.82 g/amp-hr   
18
1.82 g/amp-hr   
35

Electron Work Function
Not Available   
5.65 eV   
1

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

Atomic Properties

Atomic Number
89   
29
78   
38

Electron Configuration
[Rn] 6d1 7s2   
[Xe] 4f14 5d9 6s1   

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

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

Atom
  
  

Number of Protons
89   
29
78   
38

Number of Neutrons
138   
16
117   
24

Number of Electrons
89   
29
78   
38

Radius of an Atom
  
  

Atomic Radius
195.00 pm   
7
139.00 pm   
39

Covalent Radius
Not Available   
136.00 pm   
99+

Van der Waals Radius
Not Available   
175.00 pm   
36

Atomic Weight
227.00 amu   
25
47.87 amu   
99+

Atomic Volume
22.54 cm3/mol   
11
9.09 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Radium
  
Iridium
  

Next Element
Thorium
  
Gold
  

Valence Electron Potential
38.60 (-eV)   
99+
392.42 (-eV)   
1

Lattice Constant
567.00 pm   
8
392.42 pm   
24

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
10.00 g/cm3   
37
21.45 g/cm3   
11

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

Tensile Strength
Not Available   
125.00 MPa   
14

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
Not Available   
0.07 (Pa)   
18

Elasticity properties
  
  

Shear Modulus
Not Available   
61.00 GPa   
14

Bulk Modulus
Not Available   
230.00 GPa   
6

Young's Modulus
Not Available   
168.00 GPa   
14

Poisson Ratio
Not Available   
0.38   
6

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
10.07   
28
21.45   
4

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Permeability
Not Available   
0.00 H/m   
3

Electrical Properties
  
  

Electrical Property
Unknown   
Conductor   

Resistivity
Not Available   
105.00 nΩ·m   
30

Electrical Conductivity
Not Available   
0.10 106/cm Ω   
21

Electron Affinity
Not Available   
205.30 kJ/mol   
2

Thermal Properties

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

Molar Heat Capacity
27.20 J/mol·K   
18
25.86 J/mol·K   
35

Thermal Conductivity
12.00 W/m·K   
99+
71.60 W/m·K   
24

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
8.80 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
510.50 kJ/mol   
11

Enthalpy of Fusion
Not Available   
19.70 kJ/mol   
12

Enthalpy of Atomization
301.00 kJ/mol   
36
565.00 kJ/mol   
11

Standard Molar Entropy
56.50 J/mol.K   
25
41.60 J/mol.K   
36

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