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

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Question

(C) When alkali metals are burnt in excess of air,they form different types of oxides depending on their size and polarising power.$Li$ forms the norm

Vedclass · Accepted Answer

$Li_2O, Na_2O_2$ and $KO_2$

Vedclass · Answer

(C) When alkali metals are burnt in excess of air,they form different types of oxides depending on their size and polarising power.$Li$ forms the normal oxide: $4Li + O_2 \rightarrow 2Li_2O$.$Na$ forms the peroxide: $2Na + O_2 \rightarrow Na_2O_2$.$K$ forms the superoxide: $K + O_2 \rightarrow KO_2$.Therefore,the major oxides formed are $Li_2O, Na_2O_2$,and $KO_2$.

Column-$I$	Column-$II$
$(a)$ Parturition	$(p)$ Attachment of embryo to endometrium
$(b)$ Gestation	$(q)$ Release of egg from Graafian follicle
$(c)$ Ovulation	$(r)$ Delivery of Foetus from uterus
$(d)$ Implantation	$(s)$ Duration between pregnancy and birth
	$(t)$ Formation of zygote by fusion of egg and sperm

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

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