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 polarising power.$1$. Lithium $(Li)$

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$Li_2O, Na_2O_2$ 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 polarising power.$1$. Lithium $(Li)$ forms mainly monoxide: $4Li + O_2 \rightarrow 2Li_2O$.$2$. Sodium $(Na)$ forms mainly peroxide: $2Na + O_2 \rightarrow Na_2O_2$.$3$. Potassium $(K)$ forms mainly superoxide: $K + O_2 \rightarrow KO_2$.Therefore,the major oxides formed are $Li_2O$,$Na_2O_2$,and $KO_2$.

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

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