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Praseodymium vs Nickel

Praseodymium
Nickel
Nickel vs Praseodymium


Periodic Table
Symbol
Pr  
Ni  
Group Number
3  
15
10  
8
Period Number
6  
4  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7440100  
99+
7440020  
99+
Space Group Name
P63/mmc  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.
  
  • Zinc metal found (obtain) in many forms like granules, foil, dust and in a powder form.
  • After iron, Zinc metal the second most abundant element in the earth crust.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
Axel Fredrik Cronstedt  
Discovery
In 1885  
In 1751  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.01 %  
5
Abundance In Sun
0.00 %  
26
0.01 %  
3
Abundance In Meteorites
0.00 %  
40
1.30 %  
3
Abundance In Earth's Crust
0.00 %  
27
0.01 %  
15
Abundance In Oceans
0.00 %  
39
0.00 %  
13
Abundance In Humans
0.00 %  
24
0.00 %  
17
Uses
Uses & Benefits
  • The main use of Praseodymium include alloys. Praseodymium –Magnesium alloy is used in aircraft engines due to its high strength.
  • This metal is also used while making a permanent magnets.
  
  • It has corrosion resistance and hence it is used to plate other metals.
  • Its alloys are very useful; Nichrome alloy is used in the hot coil of toasters and electric oven.
  
Industrial Uses
Chemical Industry  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Moderately Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
33
0.05 Blood/mg dm-3  
17
In Bone
0.00 p.p.m.  
99+
0.70 p.p.m.  
20
Physical
Melting Point
935.00 °C  
99+
1,453.00 °C  
31
Boiling Point
3,130.00 °C  
28
2,732.00 °C  
40
Appearance
  
  
Physical State
Solid  
Solid  
Color
Grayish White  
Silver  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
4.00  
11
4.00  
11
Brinell Hardness
481.00 MPa  
29
667.00 MPa  
20
Vickers Hardness
400.00 MPa  
99+
638.00 MPa  
24
Speed of Sound
2,280.00 m/s  
99+
4,900.00 m/s  
16
Optical Properties
  
  
Refractive Index
1.64  
30
1.68  
28
Reflectivity
60.00 %  
23
72.00 %  
11
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Pr  
Ni  
Isotopes
  
  
Known Isotopes
31  
8
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.13  
99+
1.91  
11
Sanderson Electronegativity
1.13  
36
1.94  
12
Allred Rochow Electronegativity
1.07  
33
1.75  
4
Mulliken-Jaffe Electronegativity
1.13  
99+
1.91  
12
Allen Electronegativity
1.13  
99+
1.88  
9
Electropositivity
  
  
Pauling Electropositivity
2.87  
12
2.09  
99+
Ionization Energies
  
  
1st Energy Level
527.00 kJ/mol  
99+
737.10 kJ/mol  
25
2nd Energy Level
1,020.00 kJ/mol  
99+
1,753.00 kJ/mol  
26
3rd Energy Level
2,086.00 kJ/mol  
99+
3,395.00 kJ/mol  
17
4th Energy Level
3,761.00 kJ/mol  
99+
5,300.00 kJ/mol  
24
5th Energy Level
5,551.00 kJ/mol  
99+
7,339.00 kJ/mol  
23
6th Energy Level
5,270.00 kJ/mol  
99+
10,400.00 kJ/mol  
15
7th Energy level
5,270.00 kJ/mol  
99+
12,800.00 kJ/mol  
10
8th Energy Level
5,270.00 kJ/mol  
99+
15,600.00 kJ/mol  
10
9th Energy Level
5,270.00 kJ/mol  
99+
18,600.00 kJ/mol  
10
10th Energy Level
5,270.00 kJ/mol  
99+
21,670.00 kJ/mol  
14
11th Energy Level
5,274.00 kJ/mol  
99+
30,970.00 kJ/mol  
7
12th Energy Level
5,270.00 kJ/mol  
99+
34,000.00 kJ/mol  
29
13th Energy Level
5,270.00 kJ/mol  
99+
37,100.00 kJ/mol  
7
14th Energy Level
5,270.00 kJ/mol  
99+
41,500.00 kJ/mol  
8
15th Energy Level
52,700.00 kJ/mol  
99+
44,800.00 kJ/mol  
99+
16th Energy Level
52,700.00 kJ/mol  
99+
48,100.00 kJ/mol  
99+
17th Energy Level
527.30 kJ/mol  
99+
55,101.00 kJ/mol  
11
18th Energy Level
5,270.00 kJ/mol  
99+
58,570.00 kJ/mol  
12
19th Energy Level
527.30 kJ/mol  
99+
148,700.00 kJ/mol  
1
20th Energy Level
527.00 kJ/mol  
99+
159,000.00 kJ/mol  
3
21st Energy Level
527.00 kJ/mol  
99+
169,400.00 kJ/mol  
3
22nd Energy Level
527.00 kJ/mol  
99+
182,700.00 kJ/mol  
2
23rd Energy Level
527.00 kJ/mol  
99+
194,000.00 kJ/mol  
2
24th Energy Level
527.40 kJ/mol  
99+
737.10 kJ/mol  
21
25th Energy Level
527.00 kJ/mol  
99+
737.10 kJ/mol  
21
26th Energy Level
527.40 kJ/mol  
99+
737.10 kJ/mol  
21
27th Energy Level
527.40 kJ/mol  
99+
737.10 kJ/mol  
20
28th Energy Level
527.40 kJ/mol  
99+
737.10 kJ/mol  
26
29th Energy Level
527.00 kJ/mol  
99+
737.10 kJ/mol  
27
30th Energy Level
527.00 kJ/mol  
99+
737.00 kJ/mol  
21
Electrochemical Equivalent
1.75 g/amp-hr  
99+
1.10 g/amp-hr  
99+
Electron Work Function
2.70 eV  
99+
5.15 eV  
6
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
59  
99+
28  
99+
Electron Configuration
[Xe] 4f3 6s2  
[Ar] 3d8 4s2 Or [Ar] 3d9 4s1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100  
FCC-Crystal-Structure-of-Nickel.jpg#100  
Atom
  
  
Number of Protons
59  
99+
28  
99+
Number of Neutrons
82  
99+
31  
99+
Number of Electrons
59  
99+
28  
99+
Radius of an Atom
  
  
Atomic Radius
182.00 pm  
13
124.00 pm  
99+
Covalent Radius
203.00 pm  
9
124.00 pm  
99+
Van der Waals Radius
239.00 pm  
18
163.00 pm  
99+
Atomic Weight
140.91 amu  
99+
58.69 amu  
99+
Atomic Volume
20.80 cm3/mol  
25
6.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cerium
  
Cobalt
  
Next Element
Neodymium
  
Copper
  
Valence Electron Potential
42.64 (-eV)  
99+
42.00 (-eV)  
99+
Lattice Constant
367.25 pm  
32
352.40 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.61  
18
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
6.77 g/cm3  
99+
8.91 g/cm3  
99+
Density When Liquid (at m.p.)
6.50 g/cm3  
99+
7.81 g/cm3  
99+
Tensile Strength
55.00 MPa  
37
345.00 MPa  
13
Viscosity
0.00  
25
0.00  
8
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
27
0.00 (Pa)  
33
Vapor Pressure at 2000 K
13.20 (Pa)  
7
19.50 (Pa)  
6
Elasticity properties
  
  
Shear Modulus
14.80 GPa  
99+
76.00 GPa  
12
Bulk Modulus
28.80 GPa  
99+
180.00 GPa  
9
Young's Modulus
37.30 GPa  
99+
200.00 GPa  
12
Poisson Ratio
0.28  
16
0.31  
13
Other Mechanical Properties
Ductile, Malleable  
Ductile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.77  
99+
8.90  
99+
Magnetic Ordering
Paramagnetic  
Ferromagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
2
Susceptibility
0.00  
19
600.00  
2
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
0.70 nΩ·m  
99+
69.30 nΩ·m  
39
Electrical Conductivity
0.01 106/cm Ω  
99+
0.14 106/cm Ω  
14
Electron Affinity
50.00 kJ/mol  
26
112.00 kJ/mol  
7
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.44 J/(kg K)  
13
Molar Heat Capacity
27.20 J/mol·K  
24
26.07 J/mol·K  
39
Thermal Conductivity
12.50 W/m·K  
99+
90.90 W/m·K  
18
Critical Temperature
1,208.00 K  
99+
1,728.00 K  
35
Thermal Expansion
6.70 µm/(m·K)  
99+
13.40 µm/(m·K)  
34
Enthalpy
  
  
Enthalpy of Vaporization
296.80 kJ/mol  
99+
371.80 kJ/mol  
29
Enthalpy of Fusion
6.89 kJ/mol  
99+
17.57 kJ/mol  
14
Enthalpy of Atomization
368.00 kJ/mol  
33
422.60 kJ/mol  
22
Standard Molar Entropy
73.20 J/mol.K  
10
29.90 J/mol.K  
99+
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