1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Transition Metal
Lanthanide
1.6 CAS Number
538503547440100
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
- In the production of Dubnium, thermal gradient chromatography is used.
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
2.2 Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Joint Institute for Nuclear Research
Not Available
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.3 Abundance In Sun
~-9999 %~0.0000001 %
1E-08
0.1
2.4.5 Abundance In Meteorites
2.4.8 Abundance In Earth's Crust
1.2.2 Abundance In Oceans
1.2.4 Abundance In Humans
2 Uses
2.1 Uses & Benefits
- Currently known uses of Dubnium metal are limited to research purpose only.
- 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.
2.1.1 Industrial Uses
2.1.2 Medical Uses
2.1.3 Other Uses
2.2 Biological Properties
2.2.1 Toxicity
2.2.2 Present in Human Body
2.2.3 In Blood
0.00 Blood/mg dm-3NA
0
1970
2.5.1 In Bone
3 Physical
3.1 Melting Point
3.5 Boiling Point
4.6 Appearance
4.6.1 Physical State
4.6.2 Color
4.6.3 Luster
4.7 Hardness
4.7.1 Mohs Hardness
4.8.1 Brinell Hardness
4.8.2 Vickers Hardness
4.9 Speed of Sound
4.10 Optical Properties
4.10.1 Refractive Index
4.10.2 Reflectivity
4.11 Allotropes
4.11.1 α Allotropes
Not Available
Not Available
4.11.2 β Allotropes
Not Available
Not Available
4.11.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
5.3.3 Sanderson Electronegativity
6.2.4 Allred Rochow Electronegativity
6.2.5 Mulliken-Jaffe Electronegativity
6.2.7 Allen Electronegativity
7.2 Electropositivity
7.2.1 Pauling Electropositivity
7.3 Ionization Energies
7.3.1 1st Energy Level
664.80 kJ/mol527.00 kJ/mol
375.7
26130
7.4.1 2nd Energy Level
1,546.70 kJ/mol1,020.00 kJ/mol
710.2162
28750
7.4.2 3rd Energy Level
2,378.40 kJ/mol2,086.00 kJ/mol
1600
34230
7.5.2 4th Energy Level
3,298.80 kJ/mol3,761.00 kJ/mol
2780
37066
7.6.2 5th Energy Level
4,305.20 kJ/mol5,551.00 kJ/mol
4305.2
97510
7.6.3 6th Energy Level
7.6.4 7th Energy level
7.6.5 8th Energy Level
7.6.6 9th Energy Level
7.6.7 10th Energy Level
7.6.8 11th Energy Level
7.6.9 12th Energy Level
7.6.10 13th Energy Level
1.2.1 14th Energy Level
1.2.2 15th Energy Level
1.3.1 16th Energy Level
1.6.1 17th Energy Level
1.6.2 18th Energy Level
1.4.1 19th Energy Level
2.5.2 20th Energy Level
2.5.3 21st Energy Level
2.5.5 22nd Energy Level
2.8.1 23rd Energy Level
2.8.2 24th Energy Level
2.10.1 25th Energy Level
2.10.4 26th Energy Level
3.4.2 27th Energy Level
3.5.1 28th Energy Level
3.5.4 29th Energy Level
3.6.3 30th Energy Level
3.7 Electrochemical Equivalent
NA1.75 g/amp-hr
0.16812
8.3209
5.3 Electron Work Function
5.4 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Anti Corrosion, Ionization, Radioactive Isotopes
6 Atomic
6.1 Atomic Number
7.2 Electron Configuration
[Rn] 5f14 6d3 7s2
[Xe] 4f3 6s2
7.3 Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
7.3.1 Crystal Lattice
7.4 Atom
7.4.1 Number of Protons
8.2.4 Number of Neutrons
8.4.2 Number of Electrons
9.2 Radius of an Atom
9.2.2 Atomic Radius
139.00 pm182.00 pm
112
265
9.3.1 Covalent Radius
149.00 pm203.00 pm
96
260
9.3.4 Van der Waals Radius
9.5 Atomic Weight
268.00 amu140.91 amu
6.94
294
9.8 Atomic Volume
NA20.80 cm3/mol
1.39
71.07
9.10 Adjacent Atomic Numbers
9.10.1 Previous Element
9.10.2 Next Element
9.11 Valence Electron Potential
10.2 Lattice Constant
NA367.25 pm
228.58
891.25
10.5 Lattice Angles
10.6 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
29.30 g/cm36.77 g/cm3
0.534
40.7
11.2.4 Density When Liquid (at m.p.)
11.3 Tensile Strength
12.3 Viscosity
12.4 Vapor Pressure
12.4.1 Vapor Pressure at 1000 K
12.5.4 Vapor Pressure at 2000 K
NA13.20 (Pa)
2.62E-10
774
12.7 Elasticity properties
12.7.1 Shear Modulus
12.8.3 Bulk Modulus
12.8.8 Young's Modulus
12.9 Poisson Ratio
12.10 Other Mechanical Properties
Unknown
Ductile, Malleable
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.2.3 Magnetic Ordering
13.2.4 Permeability
13.3.3 Susceptibility
13.4 Electrical Properties
13.4.1 Electrical Property
13.4.2 Resistivity
13.4.8 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
13.4.11 Electron Affinity
14 Thermal
14.1 Specific Heat
14.2 Molar Heat Capacity
NA27.20 J/mol·K
16.443
62.7
14.3 Thermal Conductivity
14.4 Critical Temperature
14.5 Thermal Expansion
14.6 Enthalpy
14.6.1 Enthalpy of Vaporization
NA296.80 kJ/mol
7.32
799.1
14.6.6 Enthalpy of Fusion
14.6.11 Enthalpy of Atomization
14.7 Standard Molar Entropy
NA73.20 J/mol.K
9.5
198.1