Group Number
Not Available
Element Family
Actinide
Alkali
Space Group Name
Pnma
Im_ 3m
Interesting Facts
Not Available
Not Available
Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Who Discovered
Edwin McMillan and Philip H. Abelson
Robert Bunsen and Gustav Kirchhoff
Discovery
In 1940
In 1860
Abundance In Universe
Not Available
Abundance In Sun
~-9999 %
Abundance In Meteorites
Not Available
Abundance In Earth's Crust
Not Available
Abundance In Oceans
Not Available
Abundance In Humans
Not Available
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.
- The most common use of cesium metal is as a drilling fluid. It is also used in optical glass manufacturing.
-
In vacuum tubes and radiation monitor equipment this metal is used as a catalyst promoter.
Industrial Uses
NA
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
Toxicity
Toxic
Mildly Toxic
Present in Human Body
No
Yes
Physical State
Solid
Solid
Color
Silver
Silvery Gold
Mohs Hardness
Not Available
Brinell Hardness
Not Available
Speed of Sound
Not Available
Not Available
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Pauling Electronegativity
Sanderson Electronegativity
Not Available
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
Allen Electronegativity
Not Available
Pauling Electropositivity
4th Energy Level
Not Available
Electrochemical Equivalent
Electron Work Function
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility
Electron Configuration
[Rn] 5f4 6d1 7s2
[Xe] 6s1
Crystal Structure
Orthorhombic (ORTH)
Body Centered Cubic (BCC)
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100
BCC-Crystal-Structure-.jpg#100
Valence Electron Potential
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure at 2000 K
Not Available
Bulk Modulus
Not Available
Young's Modulus
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Ductile
Ductile
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Semiconductor
Electron Affinity
Not Available
Critical Temperature
Not Available
Thermal Expansion
Not Available
Enthalpy of Vaporization
Not Available
Enthalpy of Atomization
Not Available
Standard Molar Entropy
Not Available