Answer:
The reactivity of alkali metals towards oxygen rises with atomic size. So Li only produces LiO2 (Li2O). Sodium forms mostly sodium peroxide and a little sodium oxide, while potassium forms solely potassium superoxide (KO2).
When heated in air, the alkali metals form various oxides. Mention the oxides formed by Li, Na and K.
When heated in air, the alkali metals form various oxides. Mention the oxides formed by Li, Na and K.