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Draw the Lewis dot structure of \(CO^{2-}_3\) ion.

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Total no of valence electrons of CO3 = 4 + 3 x 6 = 22

Total no of valence electrons on \(CO_3^{2-}\) = 22 + 2 = 24

The skeletal structure of CO2− is

In the above structure, octet of oxygen is not complete. Hence multiple bonding is required between C and O.

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