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What is Praseodymium?

Praseodymium In Periodic Table

Praseodymium Symbol
Pr

Group Number
Not Available

Period Number
6
📊

Block
f block
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Element Family
Lanthanide
📊

CAS Number of Praseodymium
7440100
69

Space Group Name
P63/mmc

Space Group Number
194.00
5
📊

Facts about Praseodymium

Interesting Facts
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.

Sources
Found in Minerals, Mining, Ores of Minerals

History of Praseodymium

Who Discovered
Not Available

Discovery
In 1885

Abundance of Praseodymium

Abundance In Universe
0.00 %
22
📊

Abundance In Sun
0.00 %
27
📊

Abundance In Meteorites
0.00 %
40
📊

Abundance In Earth's Crust
0.00 %
27
📊

Abundance In Oceans
0.00 %
39
📊

Abundance In Humans
Not Available

Uses of Praseodymium

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.

Industrial Uses
Chemical Industry

Medical Uses
NA

Other Uses
Alloys

Biological Properties

Toxicity
Moderately Toxic
📊

Present in Human Body
📊

In Blood
Not Available

In Bone
Not Available

Physical Properties of Praseodymium

Praseodymium Melting Point
935.00 °C
48
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Praseodymium Boiling Point
3,130.00 °C
27
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Appearance of Praseodymium

Physical State
Solid
📊

Color
Grayish White

Luster
Metallic
📊

Hardness of Praseodymium

Mohs Hardness
Not Available

Brinell Hardness
481.00 MPa
24
📊

Vickers Hardness
400.00 MPa
25
📊

Speed of Sound
2,280.00 m/s
40
📊

Optical Properties

Refractive Index
Not Available

Reflectivity
Not Available

Allotropes

α Allotropes
Not Available

β Allotropes
Not Available

γ Allotropes
Not Available

Chemical Properties of Praseodymium

Chemical Formula
Pr

Isotopes of Praseodymium

Known Isotopes
31
8
📊

Electronegativity

Pauling Electronegativity
1.13
42
📊

Sanderson Electronegativity
Not Available

Allred Rochow Electronegativity
1.07
32
📊

Mulliken-Jaffe Electronegativity
Not Available

Allen Electronegativity
Not Available

Electropositivity

Pauling Electropositivity
2.87
12
📊

Ionization Energies

1st Energy Level
527.00 kJ/mol
78
📊

2nd Energy Level
1,020.00 kJ/mol
80
📊

3rd Energy Level
2,086.00 kJ/mol
70
📊

4th Energy Level
3,761.00 kJ/mol
47
📊

5th Energy Level
5,551.00 kJ/mol
29
📊

6th Energy Level
Not Available

7th Energy level
Not Available

8th Energy Level
Not Available

9th Energy Level
Not Available

10th Energy Level
Not Available

11th Energy Level
Not Available

12th Energy Level
Not Available

13th Energy Level
Not Available

14th Energy Level
Not Available

15th Energy Level
Not Available

16th Energy Level
Not Available

17th Energy Level
Not Available

18th Energy Level
Not Available

19th Energy Level
Not Available

20th Energy Level
Not Available

21st Energy Level
Not Available

22nd Energy Level
Not Available

23rd Energy Level
Not Available

24th Energy Level
Not Available

25th Energy Level
Not Available

26th Energy Level
Not Available

27th Energy Level
Not Available

28th Energy Level
Not Available

29th Energy Level
Not Available

30th Energy Level
Not Available

Electrochemical Equivalent
1.75 g/amp-hr
40
📊

Electron Work Function
2.70 eV
41
📊

Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes

Atomic Properties of Praseodymium

Atomic Number of Praseodymium
59
57
📊

Praseodymium Electron Configuration
[Xe] 4f3 6s2

Crystal Structure
Hexagonal Close Packed (HCP)
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Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100

Atom of Praseodymium

Number of Protons
59
56
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Number of Neutrons
82
42
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Number of Electrons
59
56
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Radius of an Atom

Atomic Radius
182.00 pm
11
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Covalent Radius
203.00 pm
9
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Van der Waals Radius
239.00 pm
14
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Atomic Weight
140.91 amu
51
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Atomic Volume
20.80 cm3/mol
15
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential
42.64 (-eV)
42
📊

Lattice Constant
367.25 pm
29
📊

Lattice Angles
π/2, π/2, 2 π/3

Lattice C/A Ratio
1.61
4
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Mechanical Properties of Praseodymium

Praseodymium Density

Density At Room Temperature
6.77 g/cm3
63
📊

Density When Liquid (at m.p.)
6.50 g/cm3
39
📊

Tensile Strength
Not Available

Viscosity
Not Available

Vapor Pressure of Praseodymium

Vapor Pressure at 1000 K
0.00 (Pa)
25
📊

Vapor Pressure at 2000 K
13.20 (Pa)
7
📊

Elasticity properties

Shear Modulus
14.80 GPa
39
📊

Bulk Modulus
28.80 GPa
40
📊

Young's Modulus
37.30 GPa
41
📊

Poisson Ratio
0.28
16
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Other Mechanical Properties
Ductile, Malleable

Magnetic Properties of Praseodymium

Magnetic Characteristics of Praseodymium

Specific Gravity
6.77
50
📊

Magnetic Ordering
Paramagnetic
📊

Permeability
Not Available

Susceptibility
Not Available

Electrical Properties

Electrical Property
Conductor
📊

Resistivity
0.70 nΩ·m
65
📊

Electrical Conductivity
0.01 106/cm Ω
50
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Electron Affinity
50.00 kJ/mol
21
📊

Thermal Properties of Praseodymium

Specific Heat
0.19 J/(kg K)
32
📊

Molar Heat Capacity
27.20 J/mol·K
18
📊

Thermal Conductivity
12.50 W/m·K
59
📊

Critical Temperature
Not Available

Thermal Expansion
6.70 µm/(m·K)
50
📊

Enthalpy of Praseodymium

Enthalpy of Vaporization
296.80 kJ/mol
29
📊

Enthalpy of Fusion
6.89 kJ/mol
48
📊

Enthalpy of Atomization
368.00 kJ/mol
24
📊

Standard Molar Entropy
73.20 J/mol.K
10
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