1 Periodic Table
1.1 Symbol
1.2 Group Number
1.4 Period Number
1.5 Block
1.6 Element Family
1.7 CAS Number
74401117440133
7429905
54386242
1.8 Space Group Name
1.9 Space Group Number
2 Facts
2.1 Interesting Facts
- Mendelevium metal is synthetically produced metal.
- Mendelevium metal has been produced in only trace amount.
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
2.2 Sources
Bombarding Einsteinium with Helium Ions
Found in Uranium Ores, Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Lawrence Berkeley National Laboratory
William Crookes
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
2.4.9 Abundance In Oceans
2.4.10 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Currently known uses of Mendelevium 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
0.00 Blood/mg dm-30.00 Blood/mg dm-3
0
1970
3.2.5 In Bone
0.00 p.p.m.0.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
827.00 °C1,568.00 °C
27
3410
4.2 Boiling Point
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.3 Brinell Hardness
4.4.5 Vickers Hardness
4.5 Speed of Sound
4.6 Optical Properties
4.6.1 Refractive Index
4.6.3 Reflectivity
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 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
5.3.6 Allred Rochow Electronegativity
5.3.8 Mulliken-Jaffe Electronegativity
5.3.10 Allen Electronegativity
5.4 Electropositivity
5.4.1 Pauling Electropositivity
5.5 Ionization Energies
5.5.1 1st Energy Level
635.00 kJ/mol568.00 kJ/mol
375.7
26130
5.5.3 2nd Energy Level
1,235.00 kJ/mol1,128.00 kJ/mol
710.2162
28750
5.5.5 3rd Energy Level
2,470.00 kJ/mol1,814.00 kJ/mol
1600
34230
5.6.1 4th Energy Level
3,840.00 kJ/mol2,991.00 kJ/mol
2780
37066
5.6.2 5th Energy Level
5.7.1 6th Energy Level
6.1.1 7th Energy level
6.1.2 8th Energy Level
6.4.2 9th Energy Level
6.4.3 10th Energy Level
6.4.5 11th Energy Level
6.4.7 12th Energy Level
6.5.2 13th Energy Level
6.5.4 14th Energy Level
6.5.6 15th Energy Level
6.6.1 16th Energy Level
6.6.2 17th Energy Level
6.7.1 18th Energy Level
6.7.2 19th Energy Level
6.9.1 20th Energy Level
6.9.2 21st Energy Level
6.10.1 22nd Energy Level
6.10.2 23rd Energy Level
6.12.1 24th Energy Level
7.1.2 25th Energy Level
7.1.3 26th Energy Level
7.1.5 27th Energy Level
7.1.6 28th Energy Level
7.1.7 29th Energy Level
7.2.1 30th Energy Level
7.3 Electrochemical Equivalent
3.21 g/amp-hr1.72 g/amp-hr
0.16812
8.3209
7.6 Electron Work Function
7.7 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity
8 Atomic
8.1 Atomic Number
8.3 Electron Configuration
[Rn] 5f13 7s2
[Rn] 5f2 6d1 7s2
8.4 Crystal Structure
Not Known
Tetragonal (TETR)
8.4.1 Crystal Lattice
8.5 Atom
8.5.1 Number of Protons
8.5.3 Number of Neutrons
8.5.5 Number of Electrons
8.6 Radius of an Atom
8.6.1 Atomic Radius
8.7.1 Covalent Radius
9.1.2 Van der Waals Radius
246.00 pm243.00 pm
139
348
9.2 Atomic Weight
258.00 amu231.04 amu
6.94
294
9.3 Atomic Volume
NA15.00 cm3/mol
1.39
71.07
9.5 Adjacent Atomic Numbers
9.5.1 Previous Element
9.5.2 Next Element
9.6 Valence Electron Potential
9.7 Lattice Constant
NA392.50 pm
228.58
891.25
9.8 Lattice Angles
9.9 Lattice C/A Ratio
10 Mechanical
10.1 Density
10.1.1 Density At Room Temperature
11.1.1 Density When Liquid (at m.p.)
11.3 Tensile Strength
11.5 Viscosity
11.6 Vapor Pressure
11.6.1 Vapor Pressure at 1000 K
11.7.1 Vapor Pressure at 2000 K
11.9 Elasticity properties
11.9.1 Shear Modulus
11.10.2 Bulk Modulus
11.10.4 Young's Modulus
11.11 Poisson Ratio
11.12 Other Mechanical Properties
12 Magnetic
12.1 Magnetic Characteristics
12.1.1 Specific Gravity
12.2.1 Magnetic Ordering
12.2.2 Permeability
12.2.3 Susceptibility
12.3 Electrical Properties
12.3.1 Electrical Property
12.3.2 Resistivity
12.3.3 Electrical Conductivity
NA0.05 106/cm Ω
0.00666
0.63
12.3.4 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
NA198.10 J/mol.K
9.5
198.1