1 Periodic Table
1.1 Symbol
1.2 Group Number
1.4 Period Number
2.3 Block
2.4 Element Family
Probably Transition
Actinide
2.5 CAS Number
540380167439998
7429905
54386242
4.3 Space Group Name
4.4 Space Group Number
3 Facts
3.1 Interesting Facts
Not Available
Not Available
3.2 Sources
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced
Made by Bombarding Uranium with Neutrons, Ores of metals
3.3 History
3.3.1 Who Discovered
Gesellschaft für Schwerionenforschung
Edwin McMillan and Philip H. Abelson
3.3.2 Discovery
3.4 Abundance
3.4.1 Abundance In Universe
3.7.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
3.13.3 Abundance In Meteorites
3.16.3 Abundance In Earth's Crust
4.5.4 Abundance In Oceans
4.7.2 Abundance In Humans
6 Uses
6.1 Uses & Benefits
- Currently known uses of Meitnerium 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.
6.1.1 Industrial Uses
6.1.2 Medical Uses
6.1.3 Other Uses
NA
Alloys, Nuclear Research, Research Purposes
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
6.5.5 In Bone
0.00 p.p.m.0.00 p.p.m.
0
170000
7 Physical
7.1 Melting Point
8.2 Boiling Point
9.4 Appearance
9.4.1 Physical State
9.4.2 Color
9.4.4 Luster
9.5 Hardness
9.5.1 Mohs Hardness
10.1.1 Brinell Hardness
10.1.9 Vickers Hardness
10.3 Speed of Sound
10.8 Optical Properties
10.8.1 Refractive Index
10.9.3 Reflectivity
10.10 Allotropes
10.10.1 α Allotropes
Not Available
Not Available
10.10.2 β Allotropes
Not Available
Not Available
10.10.3 γ Allotropes
Not Available
Not Available
11 Chemical
11.2 Chemical Formula
11.3 Isotopes
11.3.1 Known Isotopes
12.2 Electronegativity
12.2.1 Pauling Electronegativity
12.7.4 Sanderson Electronegativity
12.9.3 Allred Rochow Electronegativity
12.9.9 Mulliken-Jaffe Electronegativity
13.3.2 Allen Electronegativity
13.6 Electropositivity
13.6.1 Pauling Electropositivity
14.3 Ionization Energies
14.3.1 1st Energy Level
800.80 kJ/mol604.50 kJ/mol
375.7
26130
14.4.2 2nd Energy Level
1,823.60 kJ/mol1,128.00 kJ/mol
710.2162
28750
14.8.2 3rd Energy Level
2,904.20 kJ/mol1,997.00 kJ/mol
1600
34230
15.2.4 4th Energy Level
3,859.40 kJ/mol3,242.00 kJ/mol
2780
37066
15.8.3 5th Energy Level
4,920.80 kJ/molNA
4305.2
97510
15.10.2 6th Energy Level
15.12.2 7th Energy level
16.2.2 8th Energy Level
16.3.3 9th Energy Level
17.1.3 10th Energy Level
17.3.4 11th Energy Level
17.7.3 12th Energy Level
17.12.1 13th Energy Level
19.1.2 14th Energy Level
20.5.3 15th Energy Level
20.8.2 16th Energy Level
20.11.1 17th Energy Level
20.13.2 18th Energy Level
20.15.3 19th Energy Level
21.1.4 20th Energy Level
21.3.1 21st Energy Level
22.1.6 22nd Energy Level
22.2.1 23rd Energy Level
22.4.5 24th Energy Level
22.5.1 25th Energy Level
22.5.5 26th Energy Level
23.1.1 27th Energy Level
23.1.4 28th Energy Level
23.3.1 29th Energy Level
24.2.1 30th Energy Level
24.4 Electrochemical Equivalent
NA1.77 g/amp-hr
0.16812
8.3209
25.3 Electron Work Function
25.6 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity, Solubility
26 Atomic
26.1 Atomic Number
26.5 Electron Configuration
[Rn] 5f14 6d7 7s2
[Rn] 5f4 6d1 7s2
26.6 Crystal Structure
Face Centered Cubic (FCC)
Orthorhombic (ORTH)
26.6.1 Crystal Lattice
26.7 Atom
26.7.1 Number of Protons
26.10.3 Number of Neutrons
26.11.4 Number of Electrons
26.14 Radius of an Atom
26.14.1 Atomic Radius
122.00 pm155.00 pm
112
265
26.14.3 Covalent Radius
129.00 pm190.00 pm
96
260
26.16.1 Van der Waals Radius
27.2 Atomic Weight
278.00 amu237.00 amu
6.94
294
27.7 Atomic Volume
NA11.62 cm3/mol
1.39
71.07
28.2 Adjacent Atomic Numbers
28.2.1 Previous Element
28.2.2 Next Element
28.3 Valence Electron Potential
28.4 Lattice Constant
NA666.30 pm
228.58
891.25
28.6 Lattice Angles
28.7 Lattice C/A Ratio
29 Mechanical
29.1 Density
29.1.1 Density At Room Temperature
37.40 g/cm319.38 g/cm3
0.534
40.7
29.1.4 Density When Liquid (at m.p.)
29.3 Tensile Strength
30.2 Viscosity
30.4 Vapor Pressure
30.4.1 Vapor Pressure at 1000 K
30.7.1 Vapor Pressure at 2000 K
30.9 Elasticity properties
30.9.1 Shear Modulus
30.11.1 Bulk Modulus
31.1.2 Young's Modulus
31.2 Poisson Ratio
31.4 Other Mechanical Properties
32 Magnetic
32.1 Magnetic Characteristics
32.1.1 Specific Gravity
32.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
32.1.3 Permeability
32.1.4 Susceptibility
32.3 Electrical Properties
32.3.1 Electrical Property
32.3.2 Resistivity
32.3.4 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
32.4.1 Electron Affinity
33 Thermal
33.1 Specific Heat
33.2 Molar Heat Capacity
NA29.46 J/mol·K
16.443
62.7
33.5 Thermal Conductivity
33.6 Critical Temperature
33.7 Thermal Expansion
33.9 Enthalpy
33.9.1 Enthalpy of Vaporization
34.1.2 Enthalpy of Fusion
34.1.5 Enthalpy of Atomization
34.3 Standard Molar Entropy