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Samarium vs Platinum

Samarium
Platinum
Platinum vs Samarium


Periodic Table
Symbol
Sm   
Pt   
Group Number
Not Available   
10   
8
Period Number
6   
6   
Block
f block   
d block   
Element Family
Lanthanide   
Transition Metal   
CAS Number
7440199   
99+
7440064   
99+
Space Group Name
R_ 3m   
Fm_ 3m   
Space Group Number
166.00   
6
225.00   
2
Facts
Interesting Facts
  • Samarium metals helps stimulating body metabolism.
  • Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of metals, Ores of Minerals   
History
  
  
Who Discovered
Lecoq de Boisbaudran   
Antonio de Ulloa   
Discovery
In 1879   
In 1735   
Abundance
  
  
Abundance In Universe
5 * 10-7 %   
19
5 * 10-7 %   
19
Abundance In Sun
~0.0000001 %   
26
~0.0000009 %   
19
Abundance In Meteorites
0.00 %   
37
0.00 %   
25
Abundance In Earth's Crust
0.00 %   
29
0.00 %   
99+
Abundance In Oceans
0.00 %   
40
Not Available   
Uses
Uses & Benefits
  • Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
  • Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.
  
  • 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, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Chemical Industry   
Medical Uses
NA   
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
Other Uses
Alloys, In Nuclear Reactors   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Slightly Toxic   
Non Toxic   
Present in Human Body
Yes   
No   
In Blood
0.01 Blood/mg dm-3   
22
Not Available   
Physical Properties
Melting Point
1,072.00 °C   
99+
1,772.00 °C   
16
Boiling Point
1,900.00 °C   
99+
3,827.00 °C   
15
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Silvery White   
Luster
Lustrous   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
3.50   
11
Brinell Hardness
441.00 MPa   
27
300.00 MPa   
34
Vickers Hardness
412.00 MPa   
24
400.00 MPa   
25
Speed of Sound
2,130.00 m/s   
99+
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
Sm   
Pt   
Isotopes
  
  
Known Isotopes
30   
9
35   
4
Electronegativity
  
  
Pauling Electronegativity
1.17   
40
2.28   
3
Allred Rochow Electronegativity
1.07   
32
1.44   
17
Allen Electronegativity
Not Available   
1.72   
16
Electropositivity
  
  
Pauling Electropositivity
2.83   
14
1.72   
99+
Ionization Energies
  
  
1st Energy Level
544.50 kJ/mol   
99+
870.00 kJ/mol   
10
2nd Energy Level
1,070.00 kJ/mol   
99+
1,791.00 kJ/mol   
21
3rd Energy Level
2,260.00 kJ/mol   
99+
Not Available   
4th Energy Level
3,990.00 kJ/mol   
37
Not Available   
Electrochemical Equivalent
1.87 g/amp-hr   
34
1.82 g/amp-hr   
35
Electron Work Function
2.70 eV   
99+
5.65 eV   
1
Other Chemical Properties
Ionization, Radioactive Isotopes   
Chemical Stability, Anti Corrosion, Ionization   
Atomic Properties
Atomic Number
62   
99+
78   
38
Electron Configuration
[Xe] 4f6 6s2   
[Xe] 4f14 5d9 6s1   
Crystal Structure
Rhombohedral (RHO)   
Face Centered Cubic (FCC)   
Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100   
FCC-Crystal-Structure-of-Platinum.jpg#100   
Atom
  
  
Number of Protons
62   
99+
78   
38
Number of Neutrons
88   
39
117   
24
Number of Electrons
62   
99+
78   
38
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
139.00 pm   
39
Covalent Radius
198.00 pm   
13
136.00 pm   
99+
Van der Waals Radius
229.00 pm   
20
175.00 pm   
36
Atomic Weight
150.36 amu   
99+
47.87 amu   
99+
Atomic Volume
19.95 cm3/mol   
19
9.09 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Promethium
  
Iridium
  
Next Element
Europium
  
Gold
  
Valence Electron Potential
44.80 (-eV)   
37
392.42 (-eV)   
1
Lattice Constant
362.10 pm   
33
392.42 pm   
24
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
7.52 g/cm3   
99+
21.45 g/cm3   
11
Density When Liquid (at m.p.)
7.16 g/cm3   
32
19.77 g/cm3   
2
Tensile Strength
Not Available   
125.00 MPa   
14
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.94 (Pa)   
9
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.07 (Pa)   
18
Elasticity properties
  
  
Shear Modulus
19.50 GPa   
34
61.00 GPa   
14
Bulk Modulus
37.80 GPa   
35
230.00 GPa   
6
Young's Modulus
49.70 GPa   
37
168.00 GPa   
14
Poisson Ratio
0.27   
19
0.38   
6
Other Mechanical Properties
NA   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.52   
99+
21.45   
4
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Permeability
Not Available   
0.00 H/m   
3
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
0.94 nΩ·m   
99+
105.00 nΩ·m   
30
Electrical Conductivity
0.01 106/cm Ω   
99+
0.10 106/cm Ω   
21
Electron Affinity
50.00 kJ/mol   
21
205.30 kJ/mol   
2
Thermal Properties
Specific Heat
0.20 J/(kg K)   
31
0.13 J/(kg K)   
39
Molar Heat Capacity
29.54 J/mol·K   
7
25.86 J/mol·K   
35
Thermal Conductivity
13.30 W/m·K   
99+
71.60 W/m·K   
24
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
12.70 µm/(m·K)   
30
8.80 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
166.40 kJ/mol   
99+
510.50 kJ/mol   
11
Enthalpy of Fusion
8.62 kJ/mol   
40
19.70 kJ/mol   
12
Enthalpy of Atomization
209.00 kJ/mol   
99+
565.00 kJ/mol   
11
Standard Molar Entropy
69.60 J/mol.K   
15
41.60 J/mol.K   
36
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