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In the Lewis dot structure of carbonate ion shown under the formal charges on the oxvgen atoms 1,2 and 3 are respectively
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$-1,0,-1$
Solution
$\begin{aligned} & \mathrm{FC}(\text { oxygen } 1)=6-6-\frac{1}{2} \times 2=-1 \\ & \mathrm{FC}(\text { oxygen } 2)=6-4-\frac{1}{2} \times 4=6-6=0 \\ & \mathrm{FC}(\text { oxygen } 3)=6-6-\frac{1}{2} \times 2=-1\end{aligned}$
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