1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Actinide
Probably Post-Transition
1.6 CAS Number
744013354084707
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
Not Available
2.2 Sources
Found in Uranium Ores, Mining, Ores of metals
Synthetically Produced
2.3 History
2.3.1 Who Discovered
William Crookes
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.3 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
2.4.5 Abundance In Meteorites
2.4.7 Abundance In Earth's Crust
2.4.10 Abundance In Oceans
2.4.12 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Currently known uses of Protactinium metal are limited to research purpose only.
- Currently known uses of Ununtrium metal are limited to research purpose only.
3.1.1 Industrial Uses
3.1.2 Medical Uses
3.1.3 Other Uses
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
0.00 Blood/mg dm-3NA
0
1970
3.2.6 In Bone
4 Physical
4.1 Melting Point
1,568.00 °C430.00 °C
27
3410
4.2 Boiling Point
4,027.00 °C1,130.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.5.1 Brinell Hardness
5.1.1 Vickers Hardness
5.2 Speed of Sound
5.6 Optical Properties
5.6.1 Refractive Index
5.6.3 Reflectivity
5.7 Allotropes
5.7.1 α Allotropes
Not Available
Not Available
5.7.2 β Allotropes
Not Available
Not Available
5.7.3 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
6.2 Isotopes
6.2.1 Known Isotopes
6.3 Electronegativity
6.3.1 Pauling Electronegativity
6.4.2 Sanderson Electronegativity
6.4.4 Allred Rochow Electronegativity
6.4.6 Mulliken-Jaffe Electronegativity
6.5.1 Allen Electronegativity
6.7 Electropositivity
6.7.1 Pauling Electropositivity
6.8 Ionization Energies
6.8.1 1st Energy Level
568.00 kJ/mol704.90 kJ/mol
375.7
26130
6.10.1 2nd Energy Level
1,128.00 kJ/mol2,238.50 kJ/mol
710.2162
28750
6.11.1 3rd Energy Level
1,814.00 kJ/mol3,023.30 kJ/mol
1600
34230
6.13.1 4th Energy Level
2,991.00 kJ/mol4,351.50 kJ/mol
2780
37066
7.1.2 5th Energy Level
NA5,692.60 kJ/mol
4305.2
97510
7.1.4 6th Energy Level
7.1.5 7th Energy level
7.2.1 8th Energy Level
7.3.1 9th Energy Level
7.4.2 10th Energy Level
7.4.4 11th Energy Level
7.5.2 12th Energy Level
7.5.4 13th Energy Level
7.5.6 14th Energy Level
7.5.7 15th Energy Level
7.6.1 16th Energy Level
8.1.2 17th Energy Level
8.1.5 18th Energy Level
8.1.6 19th Energy Level
8.1.8 20th Energy Level
8.2.3 21st Energy Level
8.2.4 22nd Energy Level
8.2.6 23rd Energy Level
8.2.7 24th Energy Level
8.2.9 25th Energy Level
8.2.10 26th Energy Level
9.1.1 27th Energy Level
9.1.2 28th Energy Level
9.2.1 29th Energy Level
9.3.1 30th Energy Level
9.4 Electrochemical Equivalent
1.72 g/amp-hrNA
0.16812
8.3209
9.6 Electron Work Function
9.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Ionization
10 Atomic
10.1 Atomic Number
10.3 Electron Configuration
[Rn] 5f2 6d1 7s2
[Rn] 5f14 6d10 7s2 7p1
10.4 Crystal Structure
Tetragonal (TETR)
Not Known
10.4.1 Crystal Lattice
10.5 Atom
10.5.1 Number of Protons
10.5.3 Number of Neutrons
10.5.5 Number of Electrons
10.7 Radius of an Atom
10.7.1 Atomic Radius
10.7.2 Covalent Radius
10.7.3 Van der Waals Radius
10.8 Atomic Weight
231.04 amu286.00 amu
6.94
294
10.9 Atomic Volume
15.00 cm3/molNA
1.39
71.07
10.10 Adjacent Atomic Numbers
10.10.1 Previous Element
10.10.2 Next Element
10.11 Valence Electron Potential
10.12 Lattice Constant
392.50 pmNA
228.58
891.25
10.13 Lattice Angles
10.14 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
15.37 g/cm316.00 g/cm3
0.534
40.7
11.1.2 Density When Liquid (at m.p.)
11.2 Tensile Strength
11.3 Viscosity
11.4 Vapor Pressure
11.4.1 Vapor Pressure at 1000 K
11.4.2 Vapor Pressure at 2000 K
11.5 Elasticity properties
11.5.1 Shear Modulus
11.5.2 Bulk Modulus
11.5.3 Young's Modulus
11.6 Poisson Ratio
11.7 Other Mechanical Properties
12 Magnetic
12.1 Magnetic Characteristics
12.1.1 Specific Gravity
12.1.2 Magnetic Ordering
12.1.3 Permeability
12.1.4 Susceptibility
12.2 Electrical Properties
12.2.1 Electrical Property
12.2.2 Resistivity
12.2.3 Electrical Conductivity
0.05 106/cm ΩNA
0.00666
0.63
12.2.4 Electron Affinity
13 Thermal
13.1 Specific Heat
13.2 Molar Heat Capacity
13.3 Thermal Conductivity
13.4 Critical Temperature
13.5 Thermal Expansion
13.6 Enthalpy
13.6.1 Enthalpy of Vaporization
13.6.2 Enthalpy of Fusion
13.6.3 Enthalpy of Atomization
13.7 Standard Molar Entropy
198.10 J/mol.KNA
9.5
198.1