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प्रश्न
When heated in air, the alkali metals form various oxides. Mention the oxides formed by Li, Na and K.
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उत्तर
Alkali metals forms oxide when reacted with air. Lithium forms monoxide, sodium forms peroxide and potassium forms superoxide.
\[\ce{4Li + O2 -> 2Li2O}\]
\[\ce{Na + O2 -> Na2O2}\]
\[\ce{L + O2 -> KO2}\]
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| List-I | List-II |
| (Metal) | (Emitted light wavelength (nm)) |
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