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Meitnerium
Meitnerium

Neptunium
Neptunium



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Meitnerium
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Neptunium

Meitnerium Neptunium Comparison

1 Periodic Table
1.1 Symbol
Mt
Np
1.2 Group Number
9NA
Gadolinium Metal
0 17
1.4 Period Number
77
Lithium Metal
2 7
2.3 Block
d block
f block
2.4 Element Family
Probably Transition
Actinide
2.5 CAS Number
540380167439998
Aluminium Metal
7429905 54386242
4.3 Space Group Name
Not Available
Pnma
4.4 Space Group Number
NA62.00
Plutonium Metal
11 229
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
In 1982
In 1940
3.4 Abundance
3.4.1 Abundance In Universe
NANA
Thallium Metal
5E-09 0.11
3.7.2 Abundance In Sun
~-9999 %~-9999 %
Beryllium Metal
1E-08 0.1
3.13.3 Abundance In Meteorites
NANA
Gold Metal
1.7E-07 22
3.16.3 Abundance In Earth's Crust
NANA
Radium Metal
9.9E-12 8.1
4.5.4 Abundance In Oceans
NANA
Protactinium Metal
2E-23 1.1
4.7.2 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
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
NA
NA
6.1.2 Medical Uses
NA
NA
6.1.3 Other Uses
NA
Alloys, Nuclear Research, Research Purposes
6.2 Biological Properties
6.2.1 Toxicity
Unknown
Toxic
6.2.2 Present in Human Body
6.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium Metal
0 1970
6.5.5 In Bone
0.00 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
7 Physical
7.1 Melting Point
NA640.00 °C
Francium Metal
27 3410
8.2 Boiling Point
NA3,902.00 °C
Flerovium Metal
147 5660
9.4 Appearance
9.4.1 Physical State
Solid
Solid
9.4.2 Color
Unknown
Silver
9.4.4 Luster
Unknown Luster
Metallic
9.5 Hardness
9.5.1 Mohs Hardness
NANA
Cesium Metal
0.2 8.5
10.1.1 Brinell Hardness
NANA
Cesium Metal
0.14 3490
10.1.9 Vickers Hardness
NANA
Palladium Metal
121 3430
10.3 Speed of Sound
NANA
Thallium Metal
818 16200
10.8 Optical Properties
10.8.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
10.9.3 Reflectivity
NANA
Molybdenum Metal
58 97
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
Mt
Np
11.3 Isotopes
11.3.1 Known Isotopes
420
Tennessine Metal
0 38
12.2 Electronegativity
12.2.1 Pauling Electronegativity
NA1.36
Francium Metal
0.7 2.54
12.7.4 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
12.9.3 Allred Rochow Electronegativity
NA1.22
Cesium Metal
0.86 1.82
12.9.9 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
13.3.2 Allen Electronegativity
NANA
Cesium Metal
0.659 2.7
13.6 Electropositivity
13.6.1 Pauling Electropositivity
NA2.64
Gold Metal
1.46 3.3
14.3 Ionization Energies
14.3.1 1st Energy Level
800.80 kJ/mol604.50 kJ/mol
Cesium Metal
375.7 26130
14.4.2 2nd Energy Level
1,823.60 kJ/mol1,128.00 kJ/mol
Ruthenium Metal
710.2162 28750
14.8.2 3rd Energy Level
2,904.20 kJ/mol1,997.00 kJ/mol
Osmium Metal
1600 34230
15.2.4 4th Energy Level
3,859.40 kJ/mol3,242.00 kJ/mol
Thorium Metal
2780 37066
15.8.3 5th Energy Level
4,920.80 kJ/molNA
Dubnium Metal
4305.2 97510
15.10.2 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
15.12.2 7th Energy level
NANA
Bohrium Metal
7226.8 114300
16.2.2 8th Energy Level
NANA
Hassium Metal
8857.4 125300
16.3.3 9th Energy Level
NANA
Yttrium Metal
14110 134700
17.1.3 10th Energy Level
NANA
Strontium Metal
17100 144300
17.3.4 11th Energy Level
NANA
Yttrium Metal
19900 169988
17.7.3 12th Energy Level
NANA
Molybdenum Metal
22219 189368
17.12.1 13th Energy Level
NANA
Molybdenum Metal
26930 76015
19.1.2 14th Energy Level
NANA
Molybdenum Metal
29196 86450
20.5.3 15th Energy Level
NANA
Manganese Metal
41987 97510
20.8.2 16th Energy Level
NANA
Iron Metal
47206 109480
20.11.1 17th Energy Level
NANA
Cobalt Metal
52737 122200
20.13.2 18th Energy Level
NANA
Nickel Metal
58570 134810
20.15.3 19th Energy Level
NANA
Copper Metal
64702 148700
21.1.4 20th Energy Level
NANA
Molybdenum Metal
80400 171200
21.3.1 21st Energy Level
NANA
Molybdenum Metal
87000 179100
22.1.6 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
22.2.1 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
22.4.5 24th Energy Level
NANA
Molybdenum Metal
104400 195200
22.5.1 25th Energy Level
NANA
Molybdenum Metal
121900 121900
22.5.5 26th Energy Level
NANA
Molybdenum Metal
127700 127700
23.1.1 27th Energy Level
NANA
Molybdenum Metal
133800 133800
23.1.4 28th Energy Level
NANA
Molybdenum Metal
139800 139800
23.3.1 29th Energy Level
NANA
Molybdenum Metal
148100 148100
24.2.1 30th Energy Level
NANA
Molybdenum Metal
154500 154500
24.4 Electrochemical Equivalent
NA1.77 g/amp-hr
Beryllium Metal
0.16812 8.3209
25.3 Electron Work Function
NANA
Cesium Metal
2.14 5.65
25.6 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity, Solubility
26 Atomic
26.1 Atomic Number
10993
Lithium Metal
3 117
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
10993
Lithium Metal
3 117
26.10.3 Number of Neutrons
157144
Lithium Metal
4 184
26.11.4 Number of Electrons
10993
Lithium Metal
3 117
26.14 Radius of an Atom
26.14.1 Atomic Radius
122.00 pm155.00 pm
Beryllium Metal
112 265
26.14.3 Covalent Radius
129.00 pm190.00 pm
Beryllium Metal
96 260
26.16.1 Van der Waals Radius
NA221.00 pm
Zinc Metal
139 348
27.2 Atomic Weight
278.00 amu237.00 amu
Lithium Metal
6.94 294
27.7 Atomic Volume
NA11.62 cm3/mol
Manganese Metal
1.39 71.07
28.2 Adjacent Atomic Numbers
28.2.1 Previous Element
28.2.2 Next Element
28.3 Valence Electron Potential
NA96.00 (-eV)
Francium Metal
8 392.42
28.4 Lattice Constant
NA666.30 pm
Beryllium Metal
228.58 891.25
28.6 Lattice Angles
NA
π/2, π/2, π/2
28.7 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
29 Mechanical
29.1 Density
29.1.1 Density At Room Temperature
37.40 g/cm319.38 g/cm3
Lithium Metal
0.534 40.7
29.1.4 Density When Liquid (at m.p.)
NANA
Lithium Metal
0.512 20
29.3 Tensile Strength
NA125.00 MPa
Indium Metal
2.5 11000
30.2 Viscosity
NANA
Mercury Metal
0.001526 0.001526
30.4 Vapor Pressure
30.4.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
30.7.1 Vapor Pressure at 2000 K
NA0.11 (Pa)
Tungsten Metal
2.62E-10 774
30.9 Elasticity properties
30.9.1 Shear Modulus
NANA
Potassium Metal
1.3 222
30.11.1 Bulk Modulus
NANA
Cesium Metal
1.6 462
31.1.2 Young's Modulus
NANA
Cesium Metal
1.7 528
31.2 Poisson Ratio
NANA
Beryllium Metal
0.032 0.47
31.4 Other Mechanical Properties
NA
Ductile
32 Magnetic
32.1 Magnetic Characteristics
32.1.1 Specific Gravity
NA20.25
Lithium Metal
0.53 4500
32.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
32.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
32.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
32.3 Electrical Properties
32.3.1 Electrical Property
Unknown
Conductor
32.3.2 Resistivity
NA1.22 nΩ·m
Thallium Metal
0.18 961
32.3.4 Electrical Conductivity
NA0.01 106/cm Ω
Plutonium Metal
0.00666 0.63
32.4.1 Electron Affinity
NANA
Mercury Metal
0 222.8
33 Thermal
33.1 Specific Heat
NA0.12 J/(kg K)
Americium Metal
0.11 3.6
33.2 Molar Heat Capacity
NA29.46 J/mol·K
Beryllium Metal
16.443 62.7
33.5 Thermal Conductivity
NA6.30 W/m·K
Palladium
6.3 429
33.6 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
33.7 Thermal Expansion
NANA
Tungsten Metal
4.5 97
33.9 Enthalpy
33.9.1 Enthalpy of Vaporization
NANA
Zinc Metal
7.32 799.1
34.1.2 Enthalpy of Fusion
NA3.20 kJ/mol
Cesium Metal
2.1 35.23
34.1.5 Enthalpy of Atomization
NANA
Mercury Metal
61.5 837
34.3 Standard Molar Entropy
NANA
Beryllium Metal
9.5 198.1