In which of the following oxyacids is an O at | vedclass

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(D) To determine if an $O$ atom is present between two central atoms,we examine the structures of the given oxyacids:$1$. $H_2S_2O_8$ (Peroxodisulfuri

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$H_2S_2O_4$

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(D) To determine if an $O$ atom is present between two central atoms,we examine the structures of the given oxyacids:$1$. $H_2S_2O_8$ (Peroxodisulfuric acid): Contains a peroxide linkage,$S-O-O-S$.$2$. $H_4P_2O_7$ (Pyrophosphoric acid): Contains a $P-O-P$ linkage.$3$. $H_2S_2O_5$ (Disulfurous acid): Contains an $S-O-S$ linkage.$4$. $H_2S_2O_4$ (Dithionous acid): The structure is $HO-S-S-OH$,where the two sulfur atoms are directly bonded to each other without an intervening oxygen atom.Therefore,the correct option is $D$.

In which of the following oxyacids is an $O$ atom $NOT$ present between two central atoms?

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