On combustion of Li,Na,and K in excess of air | vedclass

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(C) When alkali metals are burnt in excess of air,they form different types of oxides depending on their size and polarizing power.$1$. Lithium $(Li)$

Vedclass · Accepted Answer

$Li_{2}O$,$Na_{2}O_{2}$ and $KO_{2}$

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(C) When alkali metals are burnt in excess of air,they form different types of oxides depending on their size and polarizing power.$1$. Lithium $(Li)$ forms the normal oxide: $4Li + O_{2} \rightarrow 2Li_{2}O$.$2$. Sodium $(Na)$ forms the peroxide: $2Na + O_{2} \rightarrow Na_{2}O_{2}$.$3$. Potassium $(K)$ forms the superoxide: $K + O_{2} \rightarrow KO_{2}$.Therefore,the major oxides formed are $Li_{2}O$,$Na_{2}O_{2}$,and $KO_{2}$.

On combustion of $Li$,$Na$,and $K$ in excess of air,the major oxides formed,respectively,are:

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