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Samarium vs Indium

Samarium
Indium
Indium vs Samarium


Periodic Table
Symbol
Sm  
In  
Group Number
Not Available  
13  
5
Period Number
6  
5  
Block
f block  
p block  
Element Family
Lanthanide  
Post-​Transition  
CAS Number
7440199  
99+
7440746  
17
Space Group Name
R_ 3m  
I4/mmm  
Space Group Number
166.00  
6
139.00  
8
Facts
Interesting Facts
  • Samarium metals helps stimulating body metabolism.
  • Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
  
  • Luster of Indium is bright in nature.
  • Reich and richer were looking for thallium in zinc metal and they discovered Indium metal.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Mining, Ores of metals  
History
  
  
Who Discovered
Lecoq de Boisbaudran  
Ferdinand Reich and Hieronymous Theodor Richter  
Discovery
In 1879  
In 1863  
Abundance
  
  
Abundance In Universe
5 * 10-7 %  
19
3 * 10-8 %  
28
Abundance In Sun
~0.0000001 %  
26
~0.0000004 %  
23
Abundance In Meteorites
0.00 %  
37
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
29
0.00 %  
99+
Abundance In Oceans
0.00 %  
40
0.00 %  
99+
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.
  
  • It is used to produce indium tin oxide (ITO), it is used in manufacturing touch screens, flat screen TVs and solar panels.
  • Its nitride, phosphide and antimonide are used in transistors and microchips.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Aerospace Industry, Automobile Industry  
Medical Uses
NA  
Medical Research  
Other Uses
Alloys, In Nuclear Reactors  
Alloys, In Nuclear Reactors  
Biological Properties
  
  
Toxicity
Slightly Toxic  
Non Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.01 Blood/mg dm-3  
22
Not Available  
Physical Properties
Melting Point
1,072.00 °C  
99+
156.61 °C  
99+
Boiling Point
1,900.00 °C  
99+
2,000.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
Lustrous  
Lustrous  
Hardness
  
  
Mohs Hardness
Not Available  
1.20  
20
Brinell Hardness
441.00 MPa  
27
8.80 MPa  
99+
Vickers Hardness
412.00 MPa  
24
Not Available  
Speed of Sound
2,130.00 m/s  
99+
1,215.00 m/s  
99+
Optical Properties
  
  
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  
In  
Isotopes
  
  
Known Isotopes
30  
9
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.17  
40
1.78  
16
Sanderson Electronegativity
Not Available  
2.14  
8
Allred Rochow Electronegativity
1.07  
32
1.49  
13
Mulliken-Jaffe Electronegativity
Not Available  
1.76  
10
Allen Electronegativity
Not Available  
1.66  
18
Electropositivity
  
  
Pauling Electropositivity
2.83  
14
2.22  
38
Ionization Energies
  
  
1st Energy Level
544.50 kJ/mol  
99+
558.30 kJ/mol  
99+
2nd Energy Level
1,070.00 kJ/mol  
99+
1,820.70 kJ/mol  
18
3rd Energy Level
2,260.00 kJ/mol  
99+
2,704.00 kJ/mol  
39
4th Energy Level
3,990.00 kJ/mol  
37
5,210.00 kJ/mol  
17
Electrochemical Equivalent
1.87 g/amp-hr  
34
1.43 g/amp-hr  
99+
Electron Work Function
2.70 eV  
99+
4.12 eV  
24
Other Chemical Properties
Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic Properties
Atomic Number
62  
99+
49  
99+
Electron Configuration
[Xe] 4f6 6s2  
[Kr] 4d10 5s2 5p1  
Crystal Structure
Rhombohedral (RHO)  
Tetragonal (TETR)  
Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100  
TETR-Crystal-Structure-of-Indium.jpg#100  
Atom
  
  
Number of Protons
62  
99+
49  
99+
Number of Neutrons
88  
39
66  
99+
Number of Electrons
62  
99+
49  
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm  
14
167.00 pm  
24
Covalent Radius
198.00 pm  
13
142.00 pm  
99+
Van der Waals Radius
229.00 pm  
20
193.00 pm  
31
Atomic Weight
150.36 amu  
99+
114.82 amu  
99+
Atomic Volume
19.95 cm3/mol  
19
15.70 cm3/mol  
33
Adjacent Atomic Numbers
  
  
Previous Element
Promethium
  
Cadmium
  
Next Element
Europium
  
Tin
  
Valence Electron Potential
44.80 (-eV)  
37
54.00 (-eV)  
25
Lattice Constant
362.10 pm  
33
325.23 pm  
99+
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+
7.31 g/cm3  
99+
Density When Liquid (at m.p.)
7.16 g/cm3  
32
7.02 g/cm3  
33
Tensile Strength
Not Available  
2.50 MPa  
21
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.94 (Pa)  
9
0.01 (Pa)  
11
Elasticity properties
  
  
Shear Modulus
19.50 GPa  
34
Not Available  
Bulk Modulus
37.80 GPa  
35
Not Available  
Young's Modulus
49.70 GPa  
37
11.00 GPa  
99+
Poisson Ratio
0.27  
19
Not Available  
Other Mechanical Properties
NA  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.52  
99+
7.31  
99+
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
0.94 nΩ·m  
99+
83.70 nΩ·m  
34
Electrical Conductivity
0.01 106/cm Ω  
99+
0.12 106/cm Ω  
17
Electron Affinity
50.00 kJ/mol  
21
28.90 kJ/mol  
31
Thermal Properties
Specific Heat
0.20 J/(kg K)  
31
0.23 J/(kg K)  
27
Molar Heat Capacity
29.54 J/mol·K  
7
26.74 J/mol·K  
25
Thermal Conductivity
13.30 W/m·K  
99+
81.80 W/m·K  
21
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
12.70 µm/(m·K)  
30
32.10 µm/(m·K)  
9
Enthalpy
  
  
Enthalpy of Vaporization
166.40 kJ/mol  
99+
226.40 kJ/mol  
40
Enthalpy of Fusion
8.62 kJ/mol  
40
3.28 kJ/mol  
99+
Enthalpy of Atomization
209.00 kJ/mol  
99+
242.70 kJ/mol  
99+
Standard Molar Entropy
69.60 J/mol.K  
15
57.80 J/mol.K  
22
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