Assertion: neptunium | /r/HasProperty | 3 o
Facets:
Source sentences:
text: Neptunium oxides such as Np 3 O 8 and NpO 2 as are also found in the uranium-oxygen system.
text: The oxide Np 3 O 8 , isomorphous with U 3 O 8 , is also obtained by heating such compounds in air at specific temperatures.