1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Actinide
Transition Metal
1.6 CAS Number
74399987440575
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
Not Available
- It is found in copper ores and from the crust of the earth.
- It is the most malleable and ductile metal.
- Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
2.2 Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
Earth's crust, Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Edwin McMillan and Philip H. Abelson
Unknown
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
3.2.4 Abundance In Sun
~-9999 %~0.0000001 %
1E-08
0.1
3.2.6 Abundance In Meteorites
4.1.1 Abundance In Earth's Crust
4.2.1 Abundance In Oceans
4.2.2 Abundance In Humans
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.
- Gold metal is mainly used for Jewelry, bullion, coinage, etc.
- It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
5.1.1 Industrial Uses
NA
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry
5.1.2 Medical Uses
NA
Dentistry, Pharmaceutical Industry
5.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
5.2 Biological Properties
5.2.1 Toxicity
5.2.2 Present in Human Body
5.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
0
1970
5.2.5 In Bone
0.00 p.p.m.0.02 p.p.m.
0
170000
6 Physical
6.1 Melting Point
640.00 °C1,064.43 °C
27
3410
6.2 Boiling Point
3,902.00 °C2,807.00 °C
147
5660
6.4 Appearance
6.4.1 Physical State
6.4.2 Color
6.4.3 Luster
6.5 Hardness
6.5.1 Mohs Hardness
6.6.2 Brinell Hardness
7.2.2 Vickers Hardness
7.3 Speed of Sound
7.5 Optical Properties
7.5.1 Refractive Index
7.5.2 Reflectivity
7.6 Allotropes
7.6.1 α Allotropes
Not Available
Not Available
7.6.2 β Allotropes
Not Available
Not Available
7.6.3 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
8.2 Isotopes
8.2.1 Known Isotopes
8.3 Electronegativity
8.3.1 Pauling Electronegativity
8.3.3 Sanderson Electronegativity
8.3.5 Allred Rochow Electronegativity
8.4.2 Mulliken-Jaffe Electronegativity
8.5.2 Allen Electronegativity
8.6 Electropositivity
8.6.1 Pauling Electropositivity
8.7 Ionization Energies
8.7.1 1st Energy Level
604.50 kJ/mol890.10 kJ/mol
375.7
26130
8.7.3 2nd Energy Level
1,128.00 kJ/mol1,980.00 kJ/mol
710.2162
28750
8.7.5 3rd Energy Level
1,997.00 kJ/molNA
1600
34230
8.7.7 4th Energy Level
3,242.00 kJ/molNA
2780
37066
8.7.9 5th Energy Level
8.7.11 6th Energy Level
8.7.13 7th Energy level
8.7.15 8th Energy Level
8.7.16 9th Energy Level
8.7.18 10th Energy Level
8.7.20 11th Energy Level
8.7.22 12th Energy Level
8.7.23 13th Energy Level
8.7.25 14th Energy Level
8.7.27 15th Energy Level
8.7.29 16th Energy Level
8.7.31 17th Energy Level
8.7.33 18th Energy Level
8.7.35 19th Energy Level
8.7.37 20th Energy Level
8.7.38 21st Energy Level
8.7.40 22nd Energy Level
8.7.42 23rd Energy Level
8.7.44 24th Energy Level
8.7.46 25th Energy Level
8.7.48 26th Energy Level
8.7.50 27th Energy Level
8.7.52 28th Energy Level
8.7.54 29th Energy Level
8.7.56 30th Energy Level
8.8 Electrochemical Equivalent
1.77 g/amp-hr2.45 g/amp-hr
0.16812
8.3209
8.9 Electron Work Function
8.11 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Ionization, Solubility
9 Atomic
9.1 Atomic Number
9.3 Electron Configuration
[Rn] 5f4 6d1 7s2
[Xe] 4f14 5d10 6s1
9.4 Crystal Structure
Orthorhombic (ORTH)
Face Centered Cubic (FCC)
9.4.1 Crystal Lattice
9.5 Atom
9.5.1 Number of Protons
10.1.1 Number of Neutrons
10.4.2 Number of Electrons
10.5 Radius of an Atom
10.5.1 Atomic Radius
155.00 pm151.00 pm
112
265
10.5.3 Covalent Radius
190.00 pm144.00 pm
96
260
10.5.5 Van der Waals Radius
221.00 pm166.00 pm
139
348
10.6 Atomic Weight
237.00 amu196.97 amu
6.94
294
10.8 Atomic Volume
11.62 cm3/mol10.20 cm3/mol
1.39
71.07
10.9 Adjacent Atomic Numbers
10.9.1 Previous Element
10.9.2 Next Element
10.10 Valence Electron Potential
96.00 (-eV)43.40 (-eV)
8
392.42
10.11 Lattice Constant
666.30 pm407.82 pm
228.58
891.25
10.12 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
10.13 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
19.38 g/cm319.30 g/cm3
0.534
40.7
11.2.1 Density When Liquid (at m.p.)
11.3 Tensile Strength
125.00 MPa120.00 MPa
2.5
11000
11.4 Viscosity
11.6 Vapor Pressure
11.6.1 Vapor Pressure at 1000 K
11.6.2 Vapor Pressure at 2000 K
0.11 (Pa)67.00 (Pa)
2.62E-10
774
11.9 Elasticity properties
11.9.1 Shear Modulus
11.10.1 Bulk Modulus
11.12.1 Young's Modulus
12.2 Poisson Ratio
12.3 Other Mechanical Properties
Ductile
Ductile, Malleable
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.1.2 Magnetic Ordering
13.1.3 Permeability
13.2.1 Susceptibility
13.4 Electrical Properties
13.4.1 Electrical Property
13.4.2 Resistivity
1.22 nΩ·m2.20 nΩ·m
0.18
961
13.5.3 Electrical Conductivity
0.01 106/cm Ω0.45 106/cm Ω
0.00666
0.63
13.6.2 Electron Affinity
14 Thermal
14.1 Specific Heat
0.12 J/(kg K)0.13 J/(kg K)
0.11
3.6
14.2 Molar Heat Capacity
29.46 J/mol·K25.42 J/mol·K
16.443
62.7
14.3 Thermal Conductivity
6.30 W/m·K318.00 W/m·K
6.3
429
14.4 Critical Temperature
14.6 Thermal Expansion
15.2 Enthalpy
15.2.1 Enthalpy of Vaporization
NA324.40 kJ/mol
7.32
799.1
15.2.3 Enthalpy of Fusion
3.20 kJ/mol12.55 kJ/mol
2.1
35.23
15.3.3 Enthalpy of Atomization
15.4 Standard Molar Entropy
NA47.40 J/mol.K
9.5
198.1