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Neptunium
Neptunium

Bismuth
Bismuth



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Neptunium
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Neptunium vs Bismuth

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1 Periodic Table
1.1 Symbol
Np
Bi
1.2 Group Number
NA15
Gadolinium
0 17
1.5 Period Number
76
Lithium
2 7
1.6 Block
f block
p block
1.7 Element Family
Actinide
Post-​Transition
1.8 CAS Number
74399987440699
Aluminium
7429905 54386242
2.5 Space Group Name
Pnma
C12/m1
2.6 Space Group Number
62.0012.00
Plutonium
11 229
3 Facts
3.1 Interesting Facts
Not Available
  • Bismuth metal is soluble and reacts with concentrated nitric acid.
  • It oxides are used as a yellow pigment in paint. Bismuth chloride oxide BiClO gives a pearly texture to cosmetics.
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
Claude François Geoffroy
3.3.2 Discovery
In 1940
In 1753
3.4 Abundance
3.4.1 Abundance In Universe
NA7 * 10-8 %
Thallium
5E-09 0.11
3.4.3 Abundance In Sun
~-9999 %~0.000006 %
Beryllium
1E-08 0.1
3.4.4 Abundance In Meteorites
NA0.00 %
Gold
1.7E-07 22
3.4.6 Abundance In Earth's Crust
NA0.00 %
Radium
9.9E-12 8.1
4.2.4 Abundance In Oceans
NA0.00 %
Protactinium
2E-23 1.1
4.2.5 Abundance In Humans
NANA
Radium
1E-13 1.4
5 Uses
5.1 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.
  • Tin and bismuth alloys have a very low melting point and hence it is used in fire detector and the fire extinguishers. It also used in electric solders and fuses.
5.1.1 Industrial Uses
NA
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
5.1.2 Medical Uses
NA
Pharmaceutical Industry
5.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
5.2 Biological Properties
5.2.1 Toxicity
Toxic
Low Toxic
5.2.2 Present in Human Body
5.2.3 In Blood
0.00 Blood/mg dm-30.02 Blood/mg dm-3
Plutonium
0 1970
6.1.1 In Bone
0.00 p.p.m.0.20 p.p.m.
Plutonium
0 170000
7 Physical
7.1 Melting Point
640.00 °C271.30 °C
Francium
27 3410
7.4 Boiling Point
3,902.00 °C1,560.00 °C
Flerovium
147 5660
7.5 Appearance
7.5.1 Physical State
Solid
Solid
7.5.2 Color
Silver
Silver
7.5.3 Luster
Metallic
Metallic
7.6 Hardness
7.6.1 Mohs Hardness
NA2.25
Cesium
0.2 8.5
7.6.3 Brinell Hardness
NA70.00 MPa
Cesium
0.14 3490
7.7.1 Vickers Hardness
NANA
Palladium
121 3430
7.9 Speed of Sound
NA1,790.00 m/s
Thallium
818 16200
8.3 Optical Properties
8.3.1 Refractive Index
NANA
Mercury
1.000933 1.7229
8.3.2 Reflectivity
NANA
Molybdenum
58 97
8.5 Allotropes
8.5.1 α Allotropes
Not Available
Not Available
8.5.2 β Allotropes
Not Available
Not Available
8.5.3 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
Np
Bi
9.2 Isotopes
9.2.1 Known Isotopes
2033
Tennessine
0 38
9.3 Electronegativity
9.3.1 Pauling Electronegativity
1.362.02
Francium
0.7 2.54
9.3.3 Sanderson Electronegativity
NA2.34
Cesium
0.22 2.56
9.3.5 Allred Rochow Electronegativity
1.221.67
Cesium
0.86 1.82
9.3.7 Mulliken-Jaffe Electronegativity
NA2.15
Cesium
0.62 2.48
9.4.2 Allen Electronegativity
NA2.01
Cesium
0.659 2.7
9.6 Electropositivity
9.6.1 Pauling Electropositivity
2.641.98
Gold
1.46 3.3
9.7 Ionization Energies
9.7.1 1st Energy Level
604.50 kJ/mol703.00 kJ/mol
Cesium
375.7 26130
9.7.3 2nd Energy Level
1,128.00 kJ/mol1,610.00 kJ/mol
Ruthenium
710.2162 28750
9.7.4 3rd Energy Level
1,997.00 kJ/mol2,466.00 kJ/mol
Osmium
1600 34230
9.7.6 4th Energy Level
3,242.00 kJ/mol4,370.00 kJ/mol
Thorium
2780 37066
9.7.8 5th Energy Level
NA5,400.00 kJ/mol
Dubnium
4305.2 97510
9.7.10 6th Energy Level
NA8,520.00 kJ/mol
Seaborgium
5715.8 105800
9.7.12 7th Energy level
NANA
Bohrium
7226.8 114300
9.7.14 8th Energy Level
NANA
Hassium
8857.4 125300
9.7.16 9th Energy Level
NANA
Yttrium
14110 134700
9.7.18 10th Energy Level
NANA
Strontium
17100 144300
9.7.20 11th Energy Level
NANA
Yttrium
19900 169988
9.7.22 12th Energy Level
NANA
Molybdenum
22219 189368
9.7.24 13th Energy Level
NANA
Molybdenum
26930 76015
9.7.26 14th Energy Level
NANA
Molybdenum
29196 86450
9.7.28 15th Energy Level
NANA
Manganese
41987 97510
9.7.30 16th Energy Level
NANA
Iron
47206 109480
9.7.32 17th Energy Level
NANA
Cobalt
52737 122200
9.7.34 18th Energy Level
NANA
Nickel
58570 134810
9.7.36 19th Energy Level
NANA
Copper
64702 148700
9.7.38 20th Energy Level
NANA
Molybdenum
80400 171200
9.7.40 21st Energy Level
NANA
Molybdenum
87000 179100
9.7.41 22nd Energy Level
NANA
Molybdenum
93400 184900
9.7.43 23rd Energy Level
NANA
Molybdenum
98420 198800
9.7.45 24th Energy Level
NANA
Molybdenum
104400 195200
9.7.47 25th Energy Level
NANA
Molybdenum
121900 121900
9.7.49 26th Energy Level
NANA
Molybdenum
127700 127700
9.7.51 27th Energy Level
NANA
Molybdenum
133800 133800
9.7.53 28th Energy Level
NANA
Molybdenum
139800 139800
9.7.55 29th Energy Level
NANA
Molybdenum
148100 148100
9.7.57 30th Energy Level
NANA
Molybdenum
154500 154500
9.8 Electrochemical Equivalent
1.77 g/amp-hr2.60 g/amp-hr
Beryllium
0.16812 8.3209
9.10 Electron Work Function
NA4.22 eV
Cesium
2.14 5.65
9.12 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Solubility
10 Atomic
10.1 Atomic Number
9383
Lithium
3 117
11.2 Electron Configuration
[Rn] 5f4 6d1 7s2
[Xe] 4f14 5d10 6s2 6p3
11.3 Crystal Structure
Orthorhombic (ORTH)
Rhombohedral (RHO)
11.3.1 Crystal Lattice
11.4 Atom
11.4.1 Number of Protons
9383
Lithium
3 117
11.7.2 Number of Neutrons
144126
Lithium
4 184
11.7.4 Number of Electrons
9383
Lithium
3 117
11.8 Radius of an Atom
11.8.1 Atomic Radius
155.00 pm156.00 pm
Beryllium
112 265
11.8.2 Covalent Radius
190.00 pm148.00 pm
Beryllium
96 260
11.9.2 Van der Waals Radius
221.00 pm207.00 pm
Zinc
139 348
11.10 Atomic Weight
237.00 amu208.98 amu
Lithium
6.94 294
11.12 Atomic Volume
11.62 cm3/mol21.30 cm3/mol
Manganese
1.39 71.07
11.14 Adjacent Atomic Numbers
11.14.1 Previous Element
11.14.2 Next Element
11.15 Valence Electron Potential
96.00 (-eV)41.90 (-eV)
Francium
8 392.42
11.16 Lattice Constant
666.30 pm667.40 pm
Beryllium
228.58 891.25
11.19 Lattice Angles
π/2, π/2, π/2
NA
11.20 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
19.38 g/cm39.78 g/cm3
Lithium
0.534 40.7
12.3.1 Density When Liquid (at m.p.)
NA10.05 g/cm3
Lithium
0.512 20
13.2 Tensile Strength
125.00 MPaNA
Indium
2.5 11000
13.3 Viscosity
NANA
Mercury
0.001526 0.001526
13.5 Vapor Pressure
13.5.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
13.6.1 Vapor Pressure at 2000 K
0.11 (Pa)NA
Tungsten
2.62E-10 774
13.8 Elasticity properties
13.8.1 Shear Modulus
NA12.00 GPa
Potassium
1.3 222
13.8.3 Bulk Modulus
NA31.00 GPa
Cesium
1.6 462
13.9.2 Young's Modulus
NA32.00 GPa
Cesium
1.7 528
13.10 Poisson Ratio
NA0.33
Beryllium
0.032 0.47
13.11 Other Mechanical Properties
Ductile
NA
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
20.259.79
Lithium
0.53 4500
14.2.1 Magnetic Ordering
Paramagnetic
Diamagnetic
14.2.2 Permeability
NA0.00 H/m
Copper
1.25643E-06 0.0063
14.2.3 Susceptibility
NA0.00
Aluminium
-0.000166 200000
15.2 Electrical Properties
15.2.1 Electrical Property
Conductor
Semiconductor
15.2.2 Resistivity
1.22 nΩ·m1.29 nΩ·m
Thallium
0.18 961
15.2.5 Electrical Conductivity
0.01 106/cm Ω0.01 106/cm Ω
Plutonium
0.00666 0.63
15.3.3 Electron Affinity
NA91.20 kJ/mol
Mercury
0 222.8
16 Thermal
16.1 Specific Heat
0.12 J/(kg K)0.12 J/(kg K)
Americium
0.11 3.6
16.2 Molar Heat Capacity
29.46 J/mol·K25.52 J/mol·K
Beryllium
16.443 62.7
16.3 Thermal Conductivity
6.30 W/m·K7.97 W/m·K
Palladium
6.3 429
17.2 Critical Temperature
NANA
Ytterbium
26.3 3223
17.4 Thermal Expansion
NA13.40 µm/(m·K)
Tungsten
4.5 97
17.6 Enthalpy
17.6.1 Enthalpy of Vaporization
NA151.00 kJ/mol
Zinc
7.32 799.1
17.8.1 Enthalpy of Fusion
3.20 kJ/mol10.90 kJ/mol
Cesium
2.1 35.23
17.9.2 Enthalpy of Atomization
NA207.10 kJ/mol
Mercury
61.5 837
17.10 Standard Molar Entropy
NA56.70 J/mol.K
Beryllium
9.5 198.1