| Neptunium
|
| Name | Neptunium
|
| Symbol | Np
|
| Atomic number | 93
|
| Atomic mass | 237 amu
|
| Normal state
| Solid
|
| Classification
| Metallic
|
| Crystal structure
| Orthorhombic
|
| Color
| silvery
|
| Date of discovery
| 1940
|
| Name of discoverer
| Edwin M. McMillan, Philip H. Abelson
|
| Name origin
| Named after the planet Neptune.
|
| Uses
| Used in neutron detection instruments.
|
| Obtained from
| Produced by bombarding uranium with slow neutrons. Although it is present in uranium rich ores, it is not extracted from this source. Not found outside nuclear or research facilities.
|
