1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
2.5 Block
2.6 Element Family
2.7 CAS Number
74401227440133
7429905
54386242
2.8 Space Group Name
2.9 Space Group Number
3 Facts
3.1 Interesting Facts
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
3.2 Sources
Found in Minerals, Mining
Found in Uranium Ores, Mining, Ores of metals
3.3 History
3.3.1 Who Discovered
Chien Shiung Wu, Emilio Segrè, Hans Bethe
William Crookes
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
3.4.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
4.1.2 Abundance In Meteorites
4.2.4 Abundance In Earth's Crust
5.1.1 Abundance In Oceans
5.1.2 Abundance In Humans
6 Uses
6.1 Uses & Benefits
- It is used for research purpose. Very small amount of this metal is used in atomic batteries.
- Its radioactive decay is used for a phosphor to give off light. The light emitted is converted into electricity.
- Currently known uses of Protactinium metal are limited to research purpose only.
6.1.1 Industrial Uses
6.1.2 Medical Uses
6.1.3 Other Uses
6.2 Biological Properties
6.2.1 Toxicity
6.2.2 Present in Human Body
6.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
0
1970
6.4.2 In Bone
7 Physical
7.1 Melting Point
1,042.00 °C1,568.00 °C
27
3410
7.2 Boiling Point
3,000.00 °C4,027.00 °C
147
5660
7.4 Appearance
7.4.1 Physical State
7.4.2 Color
7.4.3 Luster
7.5 Hardness
7.5.1 Mohs Hardness
7.6.2 Brinell Hardness
7.6.4 Vickers Hardness
8.3 Speed of Sound
8.5 Optical Properties
8.5.1 Refractive Index
8.5.3 Reflectivity
8.6 Allotropes
8.6.1 α Allotropes
Not Available
Not Available
8.6.2 β Allotropes
Not Available
Not Available
8.6.3 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
9.2 Isotopes
9.2.1 Known Isotopes
9.4 Electronegativity
9.4.1 Pauling Electronegativity
9.5.3 Sanderson Electronegativity
9.5.6 Allred Rochow Electronegativity
9.5.9 Mulliken-Jaffe Electronegativity
9.5.11 Allen Electronegativity
9.6 Electropositivity
9.6.1 Pauling Electropositivity
9.7 Ionization Energies
9.7.1 1st Energy Level
540.00 kJ/mol568.00 kJ/mol
375.7
26130
9.7.3 2nd Energy Level
1,050.00 kJ/mol1,128.00 kJ/mol
710.2162
28750
9.7.5 3rd Energy Level
2,150.00 kJ/mol1,814.00 kJ/mol
1600
34230
9.7.8 4th Energy Level
3,970.00 kJ/mol2,991.00 kJ/mol
2780
37066
9.7.11 5th Energy Level
9.7.13 6th Energy Level
9.7.16 7th Energy level
9.7.18 8th Energy Level
9.7.20 9th Energy Level
9.7.22 10th Energy Level
9.7.24 11th Energy Level
9.7.27 12th Energy Level
9.7.30 13th Energy Level
9.7.32 14th Energy Level
9.7.35 15th Energy Level
9.8.1 16th Energy Level
9.9.1 17th Energy Level
10.1.1 18th Energy Level
10.1.2 19th Energy Level
10.4.2 20th Energy Level
10.4.4 21st Energy Level
10.4.6 22nd Energy Level
10.5.2 23rd Energy Level
10.5.4 24th Energy Level
10.6.1 25th Energy Level
10.7.1 26th Energy Level
10.9.1 27th Energy Level
10.10.1 28th Energy Level
11.1.2 29th Energy Level
11.1.4 30th Energy Level
11.3 Electrochemical Equivalent
1.80 g/amp-hr1.72 g/amp-hr
0.16812
8.3209
11.6 Electron Work Function
11.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity
12 Atomic
12.1 Atomic Number
12.2 Electron Configuration
[Xe] 4f5 6s2
[Rn] 5f2 6d1 7s2
12.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Tetragonal (TETR)
12.3.1 Crystal Lattice
12.4 Atom
12.4.1 Number of Protons
13.1.4 Number of Neutrons
13.2.4 Number of Electrons
14.2 Radius of an Atom
14.2.1 Atomic Radius
183.00 pm163.00 pm
112
265
14.3.1 Covalent Radius
199.00 pm200.00 pm
96
260
14.5.1 Van der Waals Radius
236.00 pm243.00 pm
139
348
14.7 Atomic Weight
145.00 amu231.04 amu
6.94
294
14.9 Atomic Volume
22.39 cm3/mol15.00 cm3/mol
1.39
71.07
14.11 Adjacent Atomic Numbers
14.11.1 Previous Element
14.11.2 Next Element
14.12 Valence Electron Potential
44.10 (-eV)92.00 (-eV)
8
392.42
14.13 Lattice Constant
NA392.50 pm
228.58
891.25
14.14 Lattice Angles
14.15 Lattice C/A Ratio
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
7.26 g/cm315.37 g/cm3
0.534
40.7
15.1.2 Density When Liquid (at m.p.)
15.2 Tensile Strength
15.3 Viscosity
15.4 Vapor Pressure
15.4.1 Vapor Pressure at 1000 K
15.4.2 Vapor Pressure at 2000 K
15.5 Elasticity properties
15.5.1 Shear Modulus
15.5.2 Bulk Modulus
15.5.3 Young's Modulus
15.6 Poisson Ratio
15.7 Other Mechanical Properties
16 Magnetic
16.1 Magnetic Characteristics
16.1.1 Specific Gravity
16.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
16.1.3 Permeability
16.1.4 Susceptibility
16.2 Electrical Properties
16.2.1 Electrical Property
16.2.2 Resistivity
0.75 nΩ·m177.00 nΩ·m
0.18
961
16.2.3 Electrical Conductivity
NA0.05 106/cm Ω
0.00666
0.63
16.2.4 Electron Affinity
17 Thermal
17.1 Specific Heat
0.18 J/(kg K)0.12 J/(kg K)
0.11
3.6
17.2 Molar Heat Capacity
17.3 Thermal Conductivity
17.90 W/m·K47.00 W/m·K
6.3
429
17.4 Critical Temperature
17.5 Thermal Expansion
9.00 µm/(m·K)9.90 µm/(m·K)
4.5
97
17.6 Enthalpy
17.6.1 Enthalpy of Vaporization
17.6.2 Enthalpy of Fusion
7.50 kJ/mol12.34 kJ/mol
2.1
35.23
17.6.3 Enthalpy of Atomization
17.7 Standard Molar Entropy
NA198.10 J/mol.K
9.5
198.1