1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.3 Block
1.4 Element Family
1.5 CAS Number
74401007440735
7429905
54386242
1.6 Space Group Name
1.7 Space Group Number
2 Facts
2.1 Interesting Facts
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Formed by Decay Process, Mining
2.3 History
2.3.1 Who Discovered
Not Available
Marguerite Perey
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.7.1 Abundance In Sun
~0.0000001 %~-9999 %
1E-08
0.1
2.9.1 Abundance In Meteorites
2.9.2 Abundance In Earth's Crust
3.4.2 Abundance In Oceans
3.4.4 Abundance In Humans
4 Uses
4.1 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.
- Francium has no known uses as it has a half life of only 22 minutes.
4.1.1 Industrial Uses
4.1.2 Medical Uses
4.1.3 Other Uses
4.2 Biological Properties
4.2.1 Toxicity
4.2.2 Present in Human Body
4.2.3 In Blood
NA0.00 Blood/mg dm-3
0
1970
4.2.4 In Bone
5 Physical
5.1 Melting Point
935.00 °C27.00 °C
27
3410
5.2 Boiling Point
3,130.00 °C677.00 °C
147
5660
5.3 Appearance
5.3.1 Physical State
5.3.2 Color
5.3.3 Luster
5.4 Hardness
5.4.1 Mohs Hardness
6.2.4 Brinell Hardness
6.2.6 Vickers Hardness
7.3 Speed of Sound
7.4 Optical Properties
7.4.1 Refractive Index
7.6.2 Reflectivity
7.7 Allotropes
7.7.2 α Allotropes
Not Available
Not Available
7.7.3 β Allotropes
Not Available
Not Available
7.7.4 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
8.2 Isotopes
8.2.1 Known Isotopes
8.3 Electronegativity
8.3.1 Pauling Electronegativity
8.3.2 Sanderson Electronegativity
8.4.1 Allred Rochow Electronegativity
8.5.2 Mulliken-Jaffe Electronegativity
9.2.2 Allen Electronegativity
9.3 Electropositivity
9.3.1 Pauling Electropositivity
9.5 Ionization Energies
9.5.1 1st Energy Level
527.00 kJ/mol380.00 kJ/mol
375.7
26130
9.5.3 2nd Energy Level
1,020.00 kJ/molNA
710.2162
28750
9.5.4 3rd Energy Level
2,086.00 kJ/molNA
1600
34230
9.5.7 4th Energy Level
3,761.00 kJ/molNA
2780
37066
9.5.9 5th Energy Level
5,551.00 kJ/molNA
4305.2
97510
9.5.10 6th Energy Level
9.6.2 7th Energy level
9.7.2 8th Energy Level
9.7.4 9th Energy Level
9.7.6 10th Energy Level
9.7.8 11th Energy Level
9.7.10 12th Energy Level
9.7.12 13th Energy Level
9.7.14 14th Energy Level
9.7.16 15th Energy Level
9.7.18 16th Energy Level
9.7.20 17th Energy Level
9.7.22 18th Energy Level
9.7.23 19th Energy Level
9.7.25 20th Energy Level
9.7.27 21st Energy Level
9.7.28 22nd Energy Level
9.7.30 23rd Energy Level
9.7.31 24th Energy Level
9.7.33 25th Energy Level
9.7.34 26th Energy Level
9.7.36 27th Energy Level
9.7.38 28th Energy Level
9.7.39 29th Energy Level
9.7.41 30th Energy Level
9.8 Electrochemical Equivalent
1.75 g/amp-hr8.32 g/amp-hr
0.16812
8.3209
9.9 Electron Work Function
9.10 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes
Ionization, Radioactive Isotopes, Radioactivity, Solubility
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
10.3 Crystal Structure
Hexagonal Close Packed (HCP)
Body Centered Cubic (BCC)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.4 Number of Neutrons
10.4.7 Number of Electrons
10.5 Radius of an Atom
10.5.1 Atomic Radius
10.5.4 Covalent Radius
203.00 pm260.00 pm
96
260
10.6.1 Van der Waals Radius
239.00 pm348.00 pm
139
348
10.7 Atomic Weight
140.91 amu223.00 amu
6.94
294
10.9 Atomic Volume
20.80 cm3/molNA
1.39
71.07
11.2 Adjacent Atomic Numbers
11.2.1 Previous Element
11.2.2 Next Element
11.3 Valence Electron Potential
42.64 (-eV)8.00 (-eV)
8
392.42
11.4 Lattice Constant
367.25 pmNA
228.58
891.25
11.8 Lattice Angles
11.9 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
6.77 g/cm31.87 g/cm3
0.534
40.7
12.1.3 Density When Liquid (at m.p.)
12.2 Tensile Strength
12.4 Viscosity
12.5 Vapor Pressure
12.5.1 Vapor Pressure at 1000 K
12.5.3 Vapor Pressure at 2000 K
13.20 (Pa)NA
2.62E-10
774
12.7 Elasticity properties
12.7.1 Shear Modulus
12.8.1 Bulk Modulus
12.10.1 Young's Modulus
12.12 Poisson Ratio
12.15 Other Mechanical Properties
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
14.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
14.1.3 Permeability
14.1.5 Susceptibility
14.2 Electrical Properties
14.2.1 Electrical Property
14.2.2 Resistivity
0.70 nΩ·m3.00 nΩ·m
0.18
961
14.3.1 Electrical Conductivity
0.01 106/cm Ω0.03 106/cm Ω
0.00666
0.63
14.5.2 Electron Affinity
15 Thermal
15.1 Specific Heat
15.3 Molar Heat Capacity
27.20 J/mol·KNA
16.443
62.7
15.4 Thermal Conductivity
12.50 W/m·K15.00 W/m·K
6.3
429
15.5 Critical Temperature
15.7 Thermal Expansion
16.2 Enthalpy
16.2.1 Enthalpy of Vaporization
296.80 kJ/molNA
7.32
799.1
16.2.4 Enthalpy of Fusion
16.2.6 Enthalpy of Atomization
368.00 kJ/mol71.00 kJ/mol
61.5
837
16.4 Standard Molar Entropy
73.20 J/mol.KNA
9.5
198.1