Explanation:-
The nature of oxides of many metals is basic . Metals can form simple oxide, peroxide (Na2O2) or superoxide (K2O)
Some metals oxides can react with both acid and base are called amphoteric oxides.
Example- lead oxide( PbO) , Aluminum oxide(Al2O3 ).
When we move from left to right in the period the tendency to form basic oxide decreases as polarizing power of cation increases.
Final Answer:-
Metals form basic as well as amphoteric oxide.
