Assertion: gamma neptunium | /r/HasProperty | 20.25 g
Facets:
Source sentences:
text: Neptunium metal has a silvery appearance, is chemically reactive, and exists in at least three structural modifications: alpha-neptunium, orthorhombic, density 20.25 g/cm3, beta-neptunium (above 280oC), tetragonal, density (313oC) 19.36 g/cm3, gamma-neptunium (above 577oC), cubic, density (600oC) 18.0 g/cm3.
text: Neptunium metal has a silvery appearance, is chemically reactive, and exists in at least three structural modifications: alpha-neptunium, orthorhombic, density 20.25 g/cm3, beta-neptunium (above 280oC), tetragonal, density (313oC) 19.36 g/cm3, gamma-neptunium (577oC), cubic, density (600oC) 18.0 g/cm.