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TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Chemistry > Acid-Base Character of Group 4 Oxides

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Down Group 4

• The metallic character increases

• The +2 oxidation state gets more stable and the +4 oxidation state less stable

Acid Base reactions of Group 4 Oxides

CO₂

Weakly Acidic

SiO₂

Acidic

SnO and SnO₂

Amphoteric

As an acid:

As a base:

PbO and PbO₂

Amphoteric

As a base:

As an acid:

As a base (at room temperature):

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