1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
1.6 CAS Number
74401337440097
7429905
54386242
1.11 Space Group Name
1.12 Space Group Number
2 Facts
2.1 Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
2.2 Sources
Found in Uranium Ores, Mining, Ores of metals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
William Crookes
Humphry Davy
3.1.1 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
3.5.3 Abundance In Sun
~-9999 %~0.0004 %
1E-08
0.1
3.5.6 Abundance In Meteorites
3.5.9 Abundance In Earth's Crust
4.2.5 Abundance In Oceans
5.1.1 Abundance In Humans
6 Uses
6.2 Uses & Benefits
- Currently known uses of Protactinium metal are limited to research purpose only.
- Potassium’s compounds are in high demand for their application in Fertilizer manufacturing.
- Potassium carbonate is used in glass manufacturing and Potassium carbonate in manufacturing detergent and body wash.
6.2.2 Industrial Uses
NA
Ammunition Industry, Chemical Industry
6.2.3 Medical Uses
NA
Pharmaceutical Industry
6.2.4 Other Uses
6.3 Biological Properties
6.3.1 Toxicity
6.3.2 Present in Human Body
6.3.3 In Blood
0.00 Blood/mg dm-31,620.00 Blood/mg dm-3
0
1970
6.3.5 In Bone
0.00 p.p.m.2,100.00 p.p.m.
0
170000
7 Physical
7.1 Melting Point
1,568.00 °C63.65 °C
27
3410
7.4 Boiling Point
4,027.00 °C774.00 °C
147
5660
8.4 Appearance
8.4.1 Physical State
8.4.2 Color
8.4.3 Luster
8.5 Hardness
8.5.1 Mohs Hardness
8.5.4 Brinell Hardness
8.6.2 Vickers Hardness
8.8 Speed of Sound
8.9 Optical Properties
8.9.1 Refractive Index
8.9.4 Reflectivity
8.10 Allotropes
8.10.1 α Allotropes
Not Available
Not Available
8.10.2 β Allotropes
Not Available
Not Available
8.10.4 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
9.2 Isotopes
9.2.1 Known Isotopes
9.3 Electronegativity
9.3.1 Pauling Electronegativity
9.3.4 Sanderson Electronegativity
9.3.7 Allred Rochow Electronegativity
9.3.10 Mulliken-Jaffe Electronegativity
9.3.13 Allen Electronegativity
9.4 Electropositivity
9.4.1 Pauling Electropositivity
9.5 Ionization Energies
9.5.1 1st Energy Level
568.00 kJ/mol418.80 kJ/mol
375.7
26130
9.5.4 2nd Energy Level
1,128.00 kJ/mol3,052.00 kJ/mol
710.2162
28750
9.5.7 3rd Energy Level
1,814.00 kJ/mol4,420.00 kJ/mol
1600
34230
9.5.10 4th Energy Level
2,991.00 kJ/mol5,877.00 kJ/mol
2780
37066
9.6.1 5th Energy Level
NA7,975.00 kJ/mol
4305.2
97510
9.7.1 6th Energy Level
NA9,590.00 kJ/mol
5715.8
105800
9.7.2 7th Energy level
NA11,343.00 kJ/mol
7226.8
114300
10.1.1 8th Energy Level
NA14,944.00 kJ/mol
8857.4
125300
10.4.2 9th Energy Level
NA16,963.70 kJ/mol
14110
134700
10.4.4 10th Energy Level
NA48,610.00 kJ/mol
17100
144300
10.4.5 11th Energy Level
NA54,490.00 kJ/mol
19900
169988
10.4.7 12th Energy Level
NA60,730.00 kJ/mol
22219
189368
10.5.2 13th Energy Level
NA68,950.00 kJ/mol
26930
76015
10.5.4 14th Energy Level
NA75,900.00 kJ/mol
29196
86450
10.5.6 15th Energy Level
NA83,080.00 kJ/mol
41987
97510
10.6.1 16th Energy Level
NA93,400.00 kJ/mol
47206
109480
10.7.1 17th Energy Level
NA99,710.00 kJ/mol
52737
122200
10.7.0 18th Energy Level
10.9.1 19th Energy Level
10.10.1 20th Energy Level
10.12.1 21st Energy Level
11.1.2 22nd Energy Level
11.1.3 23rd Energy Level
11.1.5 24th Energy Level
11.1.6 25th Energy Level
11.2.1 26th Energy Level
11.3.1 27th Energy Level
11.4.2 28th Energy Level
11.4.3 29th Energy Level
11.4.5 30th Energy Level
11.6 Electrochemical Equivalent
1.72 g/amp-hr1.46 g/amp-hr
0.16812
8.3209
11.7 Electron Work Function
11.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Flammability, Ionization, Solubility
12 Atomic
12.1 Atomic Number
12.2 Electron Configuration
[Rn] 5f2 6d1 7s2
[Ar] 4s1
12.3 Crystal Structure
Tetragonal (TETR)
Body Centered Cubic (BCC)
12.3.1 Crystal Lattice
12.4 Atom
12.4.1 Number of Protons
12.5.1 Number of Neutrons
13.1.4 Number of Electrons
13.2 Radius of an Atom
13.2.1 Atomic Radius
163.00 pm227.00 pm
112
265
13.3.3 Covalent Radius
200.00 pm203.00 pm
96
260
13.3.5 Van der Waals Radius
243.00 pm275.00 pm
139
348
13.4 Atomic Weight
231.04 amu39.10 amu
6.94
294
13.5 Atomic Volume
15.00 cm3/mol45.46 cm3/mol
1.39
71.07
14.2 Adjacent Atomic Numbers
14.2.1 Previous Element
14.2.2 Next Element
14.3 Valence Electron Potential
92.00 (-eV)10.40 (-eV)
8
392.42
14.6 Lattice Constant
392.50 pm532.80 pm
228.58
891.25
14.7 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
14.9 Lattice C/A Ratio
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
15.37 g/cm30.86 g/cm3
0.534
40.7
15.2.1 Density When Liquid (at m.p.)
15.4 Tensile Strength
15.5 Viscosity
15.6 Vapor Pressure
15.6.1 Vapor Pressure at 1000 K
15.6.2 Vapor Pressure at 2000 K
15.8 Elasticity properties
15.8.1 Shear Modulus
15.8.2 Bulk Modulus
15.8.3 Young's Modulus
15.9 Poisson Ratio
15.10 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
177.00 nΩ·m72.00 nΩ·m
0.18
961
16.2.3 Electrical Conductivity
0.05 106/cm Ω0.14 106/cm Ω
0.00666
0.63
16.2.4 Electron Affinity
17 Thermal
17.1 Specific Heat
0.12 J/(kg K)0.75 J/(kg K)
0.11
3.6
17.2 Molar Heat Capacity
NA29.60 J/mol·K
16.443
62.7
17.3 Thermal Conductivity
47.00 W/m·K102.50 W/m·K
6.3
429
17.4 Critical Temperature
17.5 Thermal Expansion
9.90 µm/(m·K)83.30 µm/(m·K)
4.5
97
17.6 Enthalpy
17.6.1 Enthalpy of Vaporization
NA77.50 kJ/mol
7.32
799.1
17.6.2 Enthalpy of Fusion
12.34 kJ/mol2.32 kJ/mol
2.1
35.23
17.6.3 Enthalpy of Atomization
17.7 Standard Molar Entropy
198.10 J/mol.K64.70 J/mol.K
9.5
198.1