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Neptunium
Neptunium

Rhenium
Rhenium



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Neptunium
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Rhenium

Neptunium Rhenium Comparison

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1 Periodic Table
1.1 Symbol
Np
Re
1.2 Group Number
NA7
Gadolinium Metal
0 17
2.3 Period Number
76
Lithium Metal
2 7
2.5 Block
f block
d block
2.6 Element Family
Actinide
Transition Metal
2.7 CAS Number
74399987440155
Aluminium Metal
7429905 54386242
2.8 Space Group Name
Pnma
P63/mmc
2.9 Space Group Number
62.00194.00
Plutonium Metal
11 229
3 Facts
3.1 Interesting Facts
Not Available
  • Chemical properties of Rhenium are similar to Manganese.
  • Rhenium metal is created while refining Molybdenum.
3.2 Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
Found in Minerals, Mining, Ores of Minerals
3.3 History
3.3.1 Who Discovered
Edwin McMillan and Philip H. Abelson
Masataka Ogawa
3.3.2 Discovery
In 1940
In 1908
3.4 Abundance
3.4.1 Abundance In Universe
NA2 * 10-8 %
Thallium Metal
5E-09 0.11
4.2.5 Abundance In Sun
~-9999 %~0.00000001 %
Beryllium Metal
1E-08 0.1
4.2.8 Abundance In Meteorites
NA0.00 %
Gold Metal
1.7E-07 22
5.1.1 Abundance In Earth's Crust
NA0.00 %
Radium Metal
9.9E-12 8.1
5.2.3 Abundance In Oceans
NA0.00 %
Protactinium Metal
2E-23 1.1
5.3.1 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
6 Uses
6.1 Uses & Benefits
  • Currently known uses of Neptunium metal are limited to research purpose only.
  • Neptunium’s isotope neptunium-237 is used as a neutron detectors.
  • Alloys of Rhenium are used as an electric contact material. It can resist withstand arc corrosion.
  • Its catalysts are used in hydrogenation of fine chemicals. Its Alloy with nickel is used to produce turbine blades.
6.1.1 Industrial Uses
NA
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
6.1.2 Medical Uses
NA
NA
6.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
6.2 Biological Properties
6.2.1 Toxicity
Toxic
Low Toxic
6.2.2 Present in Human Body
6.2.3 In Blood
0.00 Blood/mg dm-3NA
Plutonium Metal
0 1970
6.2.5 In Bone
0.00 p.p.m.NA
Plutonium Metal
0 170000
7 Physical
7.1 Melting Point
640.00 °C3,180.00 °C
Francium Metal
27 3410
7.2 Boiling Point
3,902.00 °C5,627.00 °C
Flerovium Metal
147 5660
7.4 Appearance
7.4.1 Physical State
Solid
Solid
7.4.2 Color
Silver
Silvery Gray
7.4.3 Luster
Metallic
Metallic
7.5 Hardness
7.5.1 Mohs Hardness
NA7.00
Cesium Metal
0.2 8.5
7.6.2 Brinell Hardness
NA1,320.00 MPa
Cesium Metal
0.14 3490
7.7.4 Vickers Hardness
NA1,350.00 MPa
Palladium Metal
121 3430
8.3 Speed of Sound
NA4,700.00 m/s
Thallium Metal
818 16200
8.5 Optical Properties
8.5.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
8.5.4 Reflectivity
NANA
Molybdenum Metal
58 97
8.6 Allotropes
8.6.1 α Allotropes
Not Available
Not Available
8.6.2 β Allotropes
Not Available
Not Available
8.6.3 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
Np
Re
9.2 Isotopes
9.2.1 Known Isotopes
2033
Tennessine Metal
0 38
9.3 Electronegativity
9.3.1 Pauling Electronegativity
1.361.90
Francium Metal
0.7 2.54
9.3.3 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
9.3.7 Allred Rochow Electronegativity
1.221.46
Cesium Metal
0.86 1.82
9.4.3 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
9.5.3 Allen Electronegativity
NA1.60
Cesium Metal
0.659 2.7
9.6 Electropositivity
9.6.1 Pauling Electropositivity
2.642.10
Gold Metal
1.46 3.3
9.7 Ionization Energies
9.7.1 1st Energy Level
604.50 kJ/mol760.00 kJ/mol
Cesium Metal
375.7 26130
9.7.3 2nd Energy Level
1,128.00 kJ/mol1,260.00 kJ/mol
Ruthenium Metal
710.2162 28750
9.7.7 3rd Energy Level
1,997.00 kJ/mol2,510.00 kJ/mol
Osmium Metal
1600 34230
9.7.11 4th Energy Level
3,242.00 kJ/mol3,640.00 kJ/mol
Thorium Metal
2780 37066
9.7.14 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
9.7.17 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
9.7.20 7th Energy level
NANA
Bohrium Metal
7226.8 114300
9.8.1 8th Energy Level
NANA
Hassium Metal
8857.4 125300
9.8.3 9th Energy Level
NANA
Yttrium Metal
14110 134700
9.9.1 10th Energy Level
NANA
Strontium Metal
17100 144300
10.1.1 11th Energy Level
NANA
Yttrium Metal
19900 169988
10.4.2 12th Energy Level
NANA
Molybdenum Metal
22219 189368
10.4.4 13th Energy Level
NANA
Molybdenum Metal
26930 76015
10.4.7 14th Energy Level
NANA
Molybdenum Metal
29196 86450
10.4.10 15th Energy Level
NANA
Manganese Metal
41987 97510
10.4.12 16th Energy Level
NANA
Iron Metal
47206 109480
10.5.2 17th Energy Level
NANA
Cobalt Metal
52737 122200
10.5.5 18th Energy Level
NANA
Nickel Metal
58570 134810
10.5.8 19th Energy Level
NANA
Copper Metal
64702 148700
10.5.10 20th Energy Level
NANA
Molybdenum Metal
80400 171200
10.6.2 21st Energy Level
NANA
Molybdenum Metal
87000 179100
10.6.3 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
10.7.1 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
10.7.3 24th Energy Level
NANA
Molybdenum Metal
104400 195200
10.9.2 25th Energy Level
NANA
Molybdenum Metal
121900 121900
10.9.4 26th Energy Level
NANA
Molybdenum Metal
127700 127700
10.10.2 27th Energy Level
NANA
Molybdenum Metal
133800 133800
10.10.4 28th Energy Level
NANA
Molybdenum Metal
139800 139800
10.12.2 29th Energy Level
NANA
Molybdenum Metal
148100 148100
11.1.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
11.3 Electrochemical Equivalent
1.77 g/amp-hr0.99 g/amp-hr
Beryllium Metal
0.16812 8.3209
11.5 Electron Work Function
NA4.96 eV
Cesium Metal
2.14 5.65
12.2 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Corrosion, Ionization, Radioactive Isotopes, Solubility
13 Atomic
13.1 Atomic Number
9375
Lithium Metal
3 117
13.4 Electron Configuration
[Rn] 5f4 6d1 7s2
[Xe] 4f14 5d5 6s2
13.5 Crystal Structure
Orthorhombic (ORTH)
Hexagonal Close Packed (HCP)
13.5.1 Crystal Lattice
13.6 Atom
13.6.1 Number of Protons
9375
Lithium Metal
3 117
13.9.3 Number of Neutrons
144111
Lithium Metal
4 184
13.10.2 Number of Electrons
9375
Lithium Metal
3 117
13.11 Radius of an Atom
13.11.1 Atomic Radius
155.00 pm137.00 pm
Beryllium Metal
112 265
13.11.3 Covalent Radius
190.00 pm151.00 pm
Beryllium Metal
96 260
13.12.2 Van der Waals Radius
221.00 pm200.00 pm
Zinc Metal
139 348
13.14 Atomic Weight
237.00 amu186.21 amu
Lithium Metal
6.94 294
14.2 Atomic Volume
11.62 cm3/mol8.85 cm3/mol
Manganese Metal
1.39 71.07
14.4 Adjacent Atomic Numbers
14.4.1 Previous Element
14.4.2 Next Element
14.5 Valence Electron Potential
96.00 (-eV)180.00 (-eV)
Francium Metal
8 392.42
14.8 Lattice Constant
666.30 pm276.10 pm
Beryllium Metal
228.58 891.25
14.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
14.12 Lattice C/A Ratio
NA1.62
Beryllium Metal
1.567 1.886
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
19.38 g/cm321.02 g/cm3
Lithium Metal
0.534 40.7
15.3.1 Density When Liquid (at m.p.)
NA18.90 g/cm3
Lithium Metal
0.512 20
17.2 Tensile Strength
125.00 MPa1,070.00 MPa
Indium Metal
2.5 11000
17.4 Viscosity
NANA
Mercury Metal
0.001526 0.001526
17.5 Vapor Pressure
17.5.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
17.7.1 Vapor Pressure at 2000 K
0.11 (Pa)0.00 (Pa)
Tungsten Metal
2.62E-10 774
17.9 Elasticity properties
17.9.1 Shear Modulus
NA178.00 GPa
Potassium Metal
1.3 222
17.12.2 Bulk Modulus
NA370.00 GPa
Cesium Metal
1.6 462
17.13.3 Young's Modulus
NA463.00 GPa
Cesium Metal
1.7 528
17.15 Poisson Ratio
NA0.30
Beryllium Metal
0.032 0.47
17.16 Other Mechanical Properties
Ductile
Ductile, Malleable
18 Magnetic
18.1 Magnetic Characteristics
18.1.1 Specific Gravity
20.2521.02
Lithium Metal
0.53 4500
18.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
18.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
18.2.1 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
18.3 Electrical Properties
18.3.1 Electrical Property
Conductor
Conductor
18.3.2 Resistivity
1.22 nΩ·m193.00 nΩ·m
Thallium Metal
0.18 961
18.4.1 Electrical Conductivity
0.01 106/cm Ω0.05 106/cm Ω
Plutonium Metal
0.00666 0.63
19.1.4 Electron Affinity
NA14.50 kJ/mol
Mercury Metal
0 222.8
20 Thermal
20.1 Specific Heat
0.12 J/(kg K)0.13 J/(kg K)
Americium Metal
0.11 3.6
20.3 Molar Heat Capacity
29.46 J/mol·K25.48 J/mol·K
Beryllium Metal
16.443 62.7
20.4 Thermal Conductivity
6.30 W/m·K48.00 W/m·K
Palladium
6.3 429
20.5 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
20.6 Thermal Expansion
NA6.20 µm/(m·K)
Tungsten Metal
4.5 97
21.2 Enthalpy
21.2.1 Enthalpy of Vaporization
NA707.10 kJ/mol
Zinc Metal
7.32 799.1
21.3.1 Enthalpy of Fusion
3.20 kJ/mol33.05 kJ/mol
Cesium Metal
2.1 35.23
21.4.1 Enthalpy of Atomization
NA791.00 kJ/mol
Mercury Metal
61.5 837
21.5 Standard Molar Entropy
NA36.90 J/mol.K
Beryllium Metal
9.5 198.1