Which of the following has the highest number | vedclass

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(A) To determine the number of oxo groups $(=O)$,we look at the structures of the given oxoacids:$1$. $H_2SO_4$ (Sulfuric acid): Structure is $(HO)_2S

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$H_2SO_4$

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(A) To determine the number of oxo groups $(=O)$,we look at the structures of the given oxoacids:$1$. $H_2SO_4$ (Sulfuric acid): Structure is $(HO)_2SO_2$,which contains $2$ oxo groups.$2$. $H_2SO_3$ (Sulfurous acid): Structure is $(HO)_2SO$,which contains $1$ oxo group.$3$. $H_3PO_3$ (Phosphorous acid): Structure is $(HO)_2P(H)=O$,which contains $1$ oxo group.$4$. $H_3PO_4$ (Phosphoric acid): Structure is $(HO)_3P=O$,which contains $1$ oxo group.Thus,$H_2SO_4$ has the highest number of oxo groups.

Which of the following has the highest number of oxo groups?

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