How do metal oxides differ from non-metal oxides ?
Metal oxides are crystalline solids that contain a metal cation and oxide anion
1. Metallic oxides are basic and react with acid to form salt and react with water to form the base.
CaO+H2O→Ca(OH)2
2. Nonmetallic oxides are acidic and react with water to form acids.
N2O5+H2O→2HNO3