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Samarium vs Iron

Samarium
Iron
Iron vs Samarium


Periodic Table
Symbol
Sm   
Fe   
Group Number
Not Available   
8   
10
Period Number
6   
4   
Block
f block   
d block   
Element Family
Lanthanide   
Transition Metal   
CAS Number
7440199   
99+
7439896   
99+
Space Group Name
R_ 3m   
Im_ 3m   
Space Group Number
166.00   
6
229.00   
1
Facts
Interesting Facts
  • Samarium metals helps stimulating body metabolism.
  • Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
  
  • Iron is not always magnetic in nature, its allotrope are ferromagnetic and the B allotrope is nonmagnetic.
  • The blood consists Iron in hemoglobin molecules to transfer Oxygen in the body.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Found in Minerals   
History
  
  
Who Discovered
Lecoq de Boisbaudran   
Unknown   
Discovery
In 1879   
Before 5000 BC   
Abundance
  
  
Abundance In Universe
5 * 10-7 %   
19
1.1 * 10-1 %   
1
Abundance In Sun
~0.0000001 %   
26
~0.1 %   
1
Abundance In Meteorites
0.00 %   
37
22.00 %   
1
Abundance In Earth's Crust
0.00 %   
29
6.30 %   
2
Abundance In Oceans
0.00 %   
40
0.00 %   
12
Abundance In Humans
Not Available   
0.01 %   
5
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.
  
  • Iron metal alloy steel is used in the application of civil engineering and manufacturing.
  • Alloys of iron with nickel, vanadium, chromium, tungsten and manganese have very useful properties.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
Pharmaceutical Industry, Surgical Instruments Manufacturing   
Other Uses
Alloys, In Nuclear Reactors   
Alloys, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Slightly Toxic   
Non Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.01 Blood/mg dm-3   
22
447.00 Blood/mg dm-3   
3
In Bone
Not Available   
380.00 p.p.m.   
5
Physical Properties
Melting Point
1,072.00 °C   
99+
1,535.00 °C   
25
Boiling Point
1,900.00 °C   
99+
2,750.00 °C   
37
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Gray   
Luster
Lustrous   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
4.00   
10
Brinell Hardness
441.00 MPa   
27
200.00 MPa   
40
Vickers Hardness
412.00 MPa   
24
608.00 MPa   
18
Speed of Sound
2,130.00 m/s   
99+
5,120.00 m/s   
8
Optical Properties
  
  
Reflectivity
Not Available   
65.00 %   
12
Allotropes
No   
Yes   
α Allotropes
Not Available   
Ferrite (alpha Iron)   
β Allotropes
Not Available   
beta Iron   
γ Allotropes
Not Available   
gamma Iron   
Chemical Properties
Chemical Formula
Sm   
Fe   
Isotopes
  
  
Known Isotopes
30   
9
26   
13
Electronegativity
  
  
Pauling Electronegativity
1.17   
40
1.83   
14
Sanderson Electronegativity
Not Available   
2.20   
7
Allred Rochow Electronegativity
1.07   
32
1.64   
8
Allen Electronegativity
Not Available   
1.80   
12
Electropositivity
  
  
Pauling Electropositivity
2.83   
14
2.17   
40
Ionization Energies
  
  
1st Energy Level
544.50 kJ/mol   
99+
762.50 kJ/mol   
17
2nd Energy Level
1,070.00 kJ/mol   
99+
1,561.90 kJ/mol   
36
3rd Energy Level
2,260.00 kJ/mol   
99+
2,957.00 kJ/mol   
29
4th Energy Level
3,990.00 kJ/mol   
37
5,290.00 kJ/mol   
16
5th Energy Level
Not Available   
7,240.00 kJ/mol   
16
6th Energy Level
Not Available   
9,560.00 kJ/mol   
14
7th Energy level
Not Available   
12,060.00 kJ/mol   
15
8th Energy Level
Not Available   
14,580.00 kJ/mol   
14
9th Energy Level
Not Available   
22,540.00 kJ/mol   
5
10th Energy Level
Not Available   
25,290.00 kJ/mol   
8
11th Energy Level
Not Available   
28,000.00 kJ/mol   
9
12th Energy Level
Not Available   
31,920.00 kJ/mol   
9
13th Energy Level
Not Available   
34,830.00 kJ/mol   
9
14th Energy Level
Not Available   
37,840.00 kJ/mol   
11
15th Energy Level
Not Available   
44,100.00 kJ/mol   
11
16th Energy Level
Not Available   
47,206.00 kJ/mol   
13
17th Energy Level
Not Available   
122,200.00 kJ/mol   
1
18th Energy Level
Not Available   
131,000.00 kJ/mol   
2
19th Energy Level
Not Available   
140,500.00 kJ/mol   
3
20th Energy Level
Not Available   
152,600.00 kJ/mol   
5
21st Energy Level
Not Available   
163,000.00 kJ/mol   
5
22nd Energy Level
Not Available   
173,600.00 kJ/mol   
4
23rd Energy Level
Not Available   
188,100.00 kJ/mol   
4
24th Energy Level
Not Available   
195,200.00 kJ/mol   
1
Electrochemical Equivalent
1.87 g/amp-hr   
34
0.69 g/amp-hr   
99+
Electron Work Function
2.70 eV   
99+
4.70 eV   
10
Other Chemical Properties
Ionization, Radioactive Isotopes   
Corrosion, Ionization, Solubility   
Atomic Properties
Atomic Number
62   
99+
26   
99+
Electron Configuration
[Xe] 4f6 6s2   
[Ar] 3d6 4s2   
Crystal Structure
Rhombohedral (RHO)   
Body Centered Cubic (BCC)   
Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
62   
99+
26   
99+
Number of Neutrons
88   
39
30   
99+
Number of Electrons
62   
99+
26   
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
126.00 pm   
99+
Covalent Radius
198.00 pm   
13
132.00 pm   
99+
Van der Waals Radius
229.00 pm   
20
200.00 pm   
28
Atomic Weight
150.36 amu   
99+
55.85 amu   
99+
Atomic Volume
19.95 cm3/mol   
19
7.10 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Promethium
  
Manganese
  
Next Element
Europium
  
Cobalt
  
Valence Electron Potential
44.80 (-eV)   
37
67.00 (-eV)   
20
Lattice Constant
362.10 pm   
33
286.65 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+
7.87 g/cm3   
99+
Density When Liquid (at m.p.)
7.16 g/cm3   
32
6.98 g/cm3   
35
Tensile Strength
Not Available   
11,000.00 MPa   
1
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.94 (Pa)   
9
0.00 (Pa)   
28
Vapor Pressure at 2000 K
Not Available   
36.80 (Pa)   
5
Elasticity properties
  
  
Shear Modulus
19.50 GPa   
34
82.00 GPa   
11
Bulk Modulus
37.80 GPa   
35
170.00 GPa   
10
Young's Modulus
49.70 GPa   
37
211.00 GPa   
9
Poisson Ratio
0.27   
19
0.29   
15
Other Mechanical Properties
NA   
Ductile, Malleable, Weldable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.52   
99+
7.20   
99+
Magnetic Ordering
Paramagnetic   
Ferromagnetic   
Permeability
Not Available   
6.3 * 10-3 H/m   
1
Susceptibility
Not Available   
2,00,000.00   
1
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
0.94 nΩ·m   
99+
96.10 nΩ·m   
32
Electrical Conductivity
0.01 106/cm Ω   
99+
0.10 106/cm Ω   
20
Electron Affinity
50.00 kJ/mol   
21
15.70 kJ/mol   
34
Thermal Properties
Specific Heat
0.20 J/(kg K)   
31
0.44 J/(kg K)   
13
Molar Heat Capacity
29.54 J/mol·K   
7
25.10 J/mol·K   
99+
Thermal Conductivity
13.30 W/m·K   
99+
80.40 W/m·K   
22
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
12.70 µm/(m·K)   
30
11.80 µm/(m·K)   
33
Enthalpy
  
  
Enthalpy of Vaporization
166.40 kJ/mol   
99+
351.00 kJ/mol   
23
Enthalpy of Fusion
8.62 kJ/mol   
40
14.90 kJ/mol   
22
Enthalpy of Atomization
209.00 kJ/mol   
99+
414.20 kJ/mol   
19
Standard Molar Entropy
69.60 J/mol.K   
15
27.30 J/mol.K   
99+
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