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Curium vs Platinum

Curium
Platinum
Platinum vs Curium


Periodic Table
Symbol
Cm  
Pt  
Group Number
Not Available  
10  
8
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440519  
36
7440064  
99+
Space Group Name
Not Available  
Fm_ 3m  
Space Group Number
Not Available  
225.00  
2
Facts
Interesting Facts
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Bombarding Plutonium with Helium Ions  
Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso  
Antonio de Ulloa  
Discovery
In 1944  
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
  • Curium metal is used to provide power to electrical equipment for space missions.
  
  • 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
Research Purposes  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Unknown  
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
1,340.00 °C  
34
1,772.00 °C  
16
Boiling Point
3,110.00 °C  
30
3,827.00 °C  
15
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Silvery White  
Luster
Metallic  
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
Cm  
Pt  
Isotopes
  
  
Known Isotopes
15  
24
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.30  
32
2.28  
3
Allred Rochow Electronegativity
1.20  
27
1.44  
17
Allen Electronegativity
Not Available  
1.72  
16
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
1.72  
99+
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol  
99+
870.00 kJ/mol  
10
2nd Energy Level
1,196.00 kJ/mol  
99+
1,791.00 kJ/mol  
21
3rd Energy Level
2,026.00 kJ/mol  
99+
Not Available  
4th Energy Level
3,550.00 kJ/mol  
99+
Not Available  
Electrochemical Equivalent
3.07 g/amp-hr  
16
1.82 g/amp-hr  
35
Electron Work Function
Not Available  
5.65 eV  
1
Other Chemical Properties
Ionization, Radioactive Isotopes  
Chemical Stability, Anti Corrosion, Ionization  
Atomic Properties
Atomic Number
96  
22
78  
38
Electron Configuration
[Rn] 5f7 6d1 7s2  
[Xe] 4f14 5d9 6s1  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Curium.jpg#100  
FCC-Crystal-Structure-of-Platinum.jpg#100  
Atom
  
  
Number of Protons
96  
22
78  
38
Number of Neutrons
151  
10
117  
24
Number of Electrons
96  
22
78  
38
Radius of an Atom
  
  
Atomic Radius
174.00 pm  
20
139.00 pm  
39
Covalent Radius
169.00 pm  
26
136.00 pm  
99+
Van der Waals Radius
200.00 pm  
28
175.00 pm  
36
Atomic Weight
247.00 amu  
18
47.87 amu  
99+
Atomic Volume
18.28 cm3/mol  
26
9.09 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Americium
  
Iridium
  
Next Element
Berkelium
  
Gold
  
Valence Electron Potential
44.50 (-eV)  
38
392.42 (-eV)  
1
Lattice Constant
Not Available  
392.42 pm  
24
Lattice Angles
NA  
π/2, π/2, π/2  
Lattice C/A Ratio
Not Available  
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
13.51 g/cm3  
25
21.45 g/cm3  
11
Density When Liquid (at m.p.)
13.85 g/cm3  
10
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
Unknown  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
13.51  
17
21.45  
4
Magnetic Ordering
Antiferromagnetic  
Paramagnetic  
Permeability
Not Available  
0.00 H/m  
3
Electrical Properties
  
  
Electrical Property
Unknown  
Conductor  
Resistivity
1.25 nΩ·m  
99+
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
Not Available  
0.13 J/(kg K)  
39
Molar Heat Capacity
Not Available  
25.86 J/mol·K  
35
Thermal Conductivity
Not Available  
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
15.00 kJ/mol  
21
19.70 kJ/mol  
12
Enthalpy of Atomization
Not Available  
565.00 kJ/mol  
11
Standard Molar Entropy
Not Available  
41.60 J/mol.K  
36
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