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Question 54

The pairs among
$$A = [SO_3^{2-}, CO_3^{2-}]$$, $$B = [O_2^{2-}, F_2]$$, $$C = [CN^-, CO]$$, $$D = [NH_3, H_3O^+]$$ and $$E = [MnO_4^{2-}, CrO_4^{2-}]$$ that do not have similar Lewis dot structure are:

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