what would be the nature of oxide formed by the elements on right hand side of periodic table .
Your friend is correct.
Elements on right hand side in periodic table is non-metal. For example Carbon, Sulphur etc. Oxides form by them are acidic in nature.
Oxide of Carbon
C + O2 →CO2
CO2 is acidic in nature.
S + O2 →SO2
SO2 is acidic in nature
Elements on right hand side in periodic table is non-metal. For example Carbon, Sulphur etc. Oxides form by them are acidic in nature.
Oxide of Carbon
C + O2 →CO2
CO2 is acidic in nature.
S + O2 →SO2
SO2 is acidic in nature