https://periodic-table.rsc.org/element/93/neptunium
Neptunium - Element information, properties and uses | Periodic Table
Element Neptunium (Np), Group 20, Atomic Number 93, f-block, Mass [237]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
periodic tableneptuniumelementinformationproperties
https://www.breakingatom.com/elements/neptunium
Neptunium (Np) - Atomic Number 93
Neptunium (Np) is a silvery colored radioactive metal that has the atomic number 93 in the periodic table. It is an Actinoid Metal with the symbol Np.
atomic numberneptuniumnp
https://www.ornl.gov/news/neptunium-study-yields-plutonium-insights-space-exploration
Neptunium study yields plutonium insights for space exploration
space explorationneptuniumstudyyieldsplutonium