In the thermal decomposition of a metal carbo | vedclass

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(D) Thermal decomposition of most metal carbonates (like $BeCO_3$,$Na_2CO_3$,$ZnCO_3$) results in the formation of metal oxide and $CO_2$,where the ox

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$Ag$

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(D) Thermal decomposition of most metal carbonates (like $BeCO_3$,$Na_2CO_3$,$ZnCO_3$) results in the formation of metal oxide and $CO_2$,where the oxidation state of the metal remains unchanged.However,for silver carbonate $(Ag_2CO_3)$,the decomposition reaction is:$2Ag_2CO_3(s) \rightarrow 4Ag(s) + 2CO_2(g) + O_2(g)$In this reaction,the oxidation state of $Ag$ changes from $+1$ in $Ag_2CO_3$ to $0$ in metallic $Ag$.

In the thermal decomposition of a metal carbonate,the oxidation state of the metal changes if the metal is

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