Oxides of elements placed in the centre of the periodic table are amphoteric or neutral (e.g. CO, NO, N2O).SiO2 is slightly acidic.
Types of oxides
- Acidic oxide: Oxides of non-metals.
Example : SO2,CO2,SO3
- Basic oxides: These are oxides of metals
CaO, MgO, Na2O
- Amphoteric oxides: Oxides shows both basic and acidic properties.
Example: ZnO, Al2O3
- Neutral oxides: Shows neither acidic nor basic properties
Example; N2O, NO, CO