1 Periodic Table
1.2 Symbol
1.3 Group Number
2.2 Period Number
2.6 Block
2.7 Element Family
Probably Post-Transition
Actinide
2.8 CAS Number
540856427439998
7429905
54386242
2.17 Space Group Name
2.18 Space Group Number
4 Facts
4.1 Interesting Facts
Not Available
Not Available
4.3 Sources
Synthetically Produced
Made by Bombarding Uranium with Neutrons, Ores of metals
4.4 History
4.4.1 Who Discovered
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
Edwin McMillan and Philip H. Abelson
4.4.2 Discovery
4.5 Abundance
4.5.1 Abundance In Universe
4.8.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
6.5.2 Abundance In Meteorites
6.8.3 Abundance In Earth's Crust
7.2.2 Abundance In Oceans
7.3.3 Abundance In Humans
8 Uses
8.1 Uses & Benefits
- Currently known uses of Ununpentium metal are limited to research purpose only.
- Currently known uses of Neptunium metal are limited to research purpose only.
-
Neptunium’s isotope neptunium-237 is used as a neutron detectors.
8.1.1 Industrial Uses
8.1.2 Medical Uses
8.1.3 Other Uses
Research Purposes
Alloys, Nuclear Research, Research Purposes
8.2 Biological Properties
8.2.1 Toxicity
8.2.3 Present in Human Body
8.2.4 In Blood
NA0.00 Blood/mg dm-3
0
1970
8.2.10 In Bone
9 Physical
9.1 Melting Point
400.00 °C640.00 °C
27
3410
9.3 Boiling Point
1,100.00 °C3,902.00 °C
147
5660
1.4 Appearance
1.4.1 Physical State
1.4.2 Color
1.4.3 Luster
1.5 Hardness
1.5.1 Mohs Hardness
1.1.1 Brinell Hardness
3.2.1 Vickers Hardness
3.5 Speed of Sound
3.12 Optical Properties
3.12.1 Refractive Index
4.3.4 Reflectivity
4.6 Allotropes
4.7.3 α Allotropes
Not Available
Not Available
4.7.4 β Allotropes
Not Available
Not Available
4.7.5 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
6.6 Electronegativity
6.6.1 Pauling Electronegativity
6.7.5 Sanderson Electronegativity
1.2.1 Allred Rochow Electronegativity
2.2.2 Mulliken-Jaffe Electronegativity
2.7.2 Allen Electronegativity
6.3 Electropositivity
6.3.1 Pauling Electropositivity
6.5 Ionization Energies
6.5.1 1st Energy Level
538.40 kJ/mol604.50 kJ/mol
375.7
26130
7.1.3 2nd Energy Level
1,756.00 kJ/mol1,128.00 kJ/mol
710.2162
28750
8.1.3 3rd Energy Level
2,653.30 kJ/mol1,997.00 kJ/mol
1600
34230
9.6.3 4th Energy Level
4,679.50 kJ/mol3,242.00 kJ/mol
2780
37066
9.8.4 5th Energy Level
5,721.60 kJ/molNA
4305.2
97510
9.9.9 6th Energy Level
9.11.5 7th Energy level
10.4.4 8th Energy Level
10.7.2 9th Energy Level
10.9.6 10th Energy Level
12.4.3 11th Energy Level
12.8.4 12th Energy Level
14.3.1 13th Energy Level
17.2.3 14th Energy Level
18.3.2 15th Energy Level
18.8.2 16th Energy Level
18.11.1 17th Energy Level
18.13.1 18th Energy Level
18.16.1 19th Energy Level
18.18.3 20th Energy Level
19.2.3 21st Energy Level
19.6.1 22nd Energy Level
19.12.2 23rd Energy Level
19.13.1 24th Energy Level
19.17.4 25th Energy Level
19.22.5 26th Energy Level
21.1.6 27th Energy Level
21.3.1 28th Energy Level
21.9.2 29th Energy Level
23.1.2 30th Energy Level
23.4 Electrochemical Equivalent
NA1.77 g/amp-hr
0.16812
8.3209
24.2 Electron Work Function
24.7 Other Chemical Properties
Chemical Stability, Ionization
Ionization, Radioactive Isotopes, Radioactivity, Solubility
25 Atomic
25.1 Atomic Number
25.4 Electron Configuration
[Rn] 5f14 6d10 7s2 7p3
[Rn] 5f4 6d1 7s2
25.5 Crystal Structure
Not Known
Orthorhombic (ORTH)
25.5.1 Crystal Lattice
25.6 Atom
25.6.1 Number of Protons
25.12.1 Number of Neutrons
25.15.7 Number of Electrons
27.2 Radius of an Atom
27.2.1 Atomic Radius
28.1.2 Covalent Radius
28.2.3 Van der Waals Radius
29.3 Atomic Weight
289.00 amu237.00 amu
6.94
294
29.7 Atomic Volume
NA11.62 cm3/mol
1.39
71.07
30.3 Adjacent Atomic Numbers
30.3.1 Previous Element
30.3.2 Next Element
30.4 Valence Electron Potential
30.10 Lattice Constant
NA666.30 pm
228.58
891.25
32.2 Lattice Angles
32.3 Lattice C/A Ratio
33 Mechanical
33.1 Density
33.1.1 Density At Room Temperature
4.51 g/cm319.38 g/cm3
0.534
40.7
33.2.3 Density When Liquid (at m.p.)
34.2 Tensile Strength
34.5 Viscosity
34.8 Vapor Pressure
34.8.1 Vapor Pressure at 1000 K
34.10.5 Vapor Pressure at 2000 K
34.12 Elasticity properties
34.12.1 Shear Modulus
34.15.2 Bulk Modulus
35.3.3 Young's Modulus
37.2 Poisson Ratio
37.7 Other Mechanical Properties
38 Magnetic
38.1 Magnetic Characteristics
38.1.1 Specific Gravity
38.4.3 Magnetic Ordering
Paramagnetic
Paramagnetic
38.4.4 Permeability
39.2.3 Susceptibility
39.6 Electrical Properties
39.6.1 Electrical Property
39.6.2 Resistivity
40.2.3 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
40.3.3 Electron Affinity
41 Thermal
41.1 Specific Heat
42.2 Molar Heat Capacity
NA29.46 J/mol·K
16.443
62.7
42.7 Thermal Conductivity
42.9 Critical Temperature
42.12 Thermal Expansion
42.14 Enthalpy
42.14.1 Enthalpy of Vaporization
42.15.1 Enthalpy of Fusion
42.15.2 Enthalpy of Atomization
45.8 Standard Molar Entropy