1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Probably Post-Transition
Actinide
1.6 CAS Number
540856427440133
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
Not Available
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
2.2 Sources
Synthetically Produced
Found in Uranium Ores, Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
William Crookes
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.4 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
2.4.7 Abundance In Meteorites
2.4.9 Abundance In Earth's Crust
2.4.12 Abundance In Oceans
2.4.15 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Currently known uses of Ununpentium metal are limited to research purpose only.
- Currently known uses of Protactinium 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
NA0.00 Blood/mg dm-3
0
1970
3.2.6 In Bone
4 Physical
4.1 Melting Point
400.00 °C1,568.00 °C
27
3410
4.2 Boiling Point
1,100.00 °C4,027.00 °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
4.4.5 Brinell Hardness
4.4.9 Vickers Hardness
4.5 Speed of Sound
4.6 Optical Properties
4.6.1 Refractive Index
4.6.4 Reflectivity
4.8 Allotropes
4.8.1 α Allotropes
Not Available
Not Available
4.8.2 β Allotropes
Not Available
Not Available
4.8.4 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
5.4 Electronegativity
5.4.1 Pauling Electronegativity
6.1.2 Sanderson Electronegativity
6.4.2 Allred Rochow Electronegativity
6.4.4 Mulliken-Jaffe Electronegativity
6.4.7 Allen Electronegativity
6.5 Electropositivity
6.5.1 Pauling Electropositivity
6.7 Ionization Energies
6.7.1 1st Energy Level
538.40 kJ/mol568.00 kJ/mol
375.7
26130
6.7.3 2nd Energy Level
1,756.00 kJ/mol1,128.00 kJ/mol
710.2162
28750
6.7.5 3rd Energy Level
2,653.30 kJ/mol1,814.00 kJ/mol
1600
34230
6.7.8 4th Energy Level
4,679.50 kJ/mol2,991.00 kJ/mol
2780
37066
6.8.2 5th Energy Level
5,721.60 kJ/molNA
4305.2
97510
6.9.1 6th Energy Level
6.12.1 7th Energy level
6.13.1 8th Energy Level
6.14.1 9th Energy Level
6.16.1 10th Energy Level
7.2.1 11th Energy Level
8.1.2 12th Energy Level
8.3.1 13th Energy Level
8.7.2 14th Energy Level
8.7.4 15th Energy Level
8.8.1 16th Energy Level
8.8.3 17th Energy Level
8.8.6 18th Energy Level
8.8.7 19th Energy Level
8.8.9 20th Energy Level
8.10.2 21st Energy Level
8.10.3 22nd Energy Level
9.1.2 23rd Energy Level
9.1.6 24th Energy Level
9.1.7 25th Energy Level
9.1.10 26th Energy Level
9.2.3 27th Energy Level
9.2.4 28th Energy Level
9.3.2 29th Energy Level
9.3.3 30th Energy Level
9.4 Electrochemical Equivalent
NA1.72 g/amp-hr
0.16812
8.3209
10.2 Electron Work Function
10.4 Other Chemical Properties
Chemical Stability, Ionization
Ionization, Radioactive Isotopes, Radioactivity
11 Atomic
11.1 Atomic Number
11.5 Electron Configuration
[Rn] 5f14 6d10 7s2 7p3
[Rn] 5f2 6d1 7s2
11.6 Crystal Structure
Not Known
Tetragonal (TETR)
11.6.1 Crystal Lattice
11.7 Atom
11.7.1 Number of Protons
11.8.1 Number of Neutrons
11.10.1 Number of Electrons
11.14 Radius of an Atom
11.14.1 Atomic Radius
12.1.3 Covalent Radius
12.1.4 Van der Waals Radius
12.2 Atomic Weight
289.00 amu231.04 amu
6.94
294
12.4 Atomic Volume
NA15.00 cm3/mol
1.39
71.07
12.6 Adjacent Atomic Numbers
12.6.1 Previous Element
12.6.2 Next Element
12.7 Valence Electron Potential
12.8 Lattice Constant
NA392.50 pm
228.58
891.25
12.10 Lattice Angles
12.11 Lattice C/A Ratio
13 Mechanical
13.1 Density
13.1.1 Density At Room Temperature
4.51 g/cm315.37 g/cm3
0.534
40.7
13.1.2 Density When Liquid (at m.p.)
13.2 Tensile Strength
13.3 Viscosity
13.5 Vapor Pressure
13.5.1 Vapor Pressure at 1000 K
13.5.2 Vapor Pressure at 2000 K
13.6 Elasticity properties
13.6.1 Shear Modulus
13.6.3 Bulk Modulus
13.6.4 Young's Modulus
13.7 Poisson Ratio
13.8 Other Mechanical Properties
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
14.2.1 Magnetic Ordering
Paramagnetic
Paramagnetic
14.2.2 Permeability
14.2.3 Susceptibility
15.2 Electrical Properties
15.2.1 Electrical Property
15.2.2 Resistivity
15.2.3 Electrical Conductivity
NA0.05 106/cm Ω
0.00666
0.63
15.2.6 Electron Affinity
16 Thermal
16.1 Specific Heat
16.3 Molar Heat Capacity
16.4 Thermal Conductivity
16.5 Critical Temperature
16.6 Thermal Expansion
16.7 Enthalpy
16.7.1 Enthalpy of Vaporization
16.7.2 Enthalpy of Fusion
17.1.1 Enthalpy of Atomization
17.2 Standard Molar Entropy
NA198.10 J/mol.K
9.5
198.1