Neptunium(V) oxide

Neptunium(V) oxide
Names
	IUPAC name Neptunium(V) oxide
	Other names Neptunium pentoxide; Dineptunium pentoxide
Identifiers
3D model (JSmol)	Interactive image;
	InChI InChI=1S/2Np.5O/q2+5;5-2 Key: MOPDXFDBEISTFG-UHFFFAOYSA-N;
	SMILES [Np+5].[Np+5].[O-2].[O-2].[O-2].[O-2].[O-2];
Properties
Chemical formula	Np2O5
Molar mass	554.09 g/mol
Appearance	Green crystals
Density	8.18 g/cm3
Melting point	427 °C; 800 °F; 700 K (decomposes)
Solubility in water	Insoluble
Related compounds
Other anions	Neptunium(V) fluoride
Other cations	Protactinium(V) oxide; Uranium(V) oxide
Related neptunium oxides	Neptunium(IV) oxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Neptunium(V) oxide or neptunium pentoxide is one of two stable oxides of neptunium, the other being neptunium(IV) oxide. It has a chemical formula of Np₂O₅.

Names

IUPAC name Neptunium(V) oxide
Other names Neptunium pentoxide Dineptunium pentoxide
Identifiers
3D model (JSmol)	Interactive image
InChI InChI=1S/2Np.5O/q2+5;5-2 Key: MOPDXFDBEISTFG-UHFFFAOYSA-N
SMILES [Np+5].[Np+5].[O-2].[O-2].[O-2].[O-2].[O-2]
Properties
Chemical formula	Np₂O₅
Molar mass	554.09 g/mol
Appearance	Green crystals
Density	8.18 g/cm³
Melting point	427 °C; 800 °F; 700 K (decomposes)
Solubility in water	Insoluble
Related compounds
Other anions	Neptunium(V) fluoride
Other cations	Protactinium(V) oxide Uranium(V) oxide
Related neptunium oxides	Neptunium(IV) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references