Which of the following compounds has the maxi | vedclass

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(A) To determine the number of oxo groups,we look at the structures of the given acids:$1$. $H_2SO_4$ (Sulfuric acid): The central $S$ atom is bonded

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$H_2SO_4$

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(A) To determine the number of oxo groups,we look at the structures of the given acids:$1$. $H_2SO_4$ (Sulfuric acid): The central $S$ atom is bonded to two $OH$ groups and two terminal $O$ atoms via double bonds. Thus,it has $2$ oxo groups.$2$. $H_2SO_3$ (Sulfurous acid): The central $S$ atom is bonded to two $OH$ groups and one terminal $O$ atom via a double bond. Thus,it has $1$ oxo group.$3$. $H_3PO_3$ (Phosphorous acid): The central $P$ atom is bonded to two $OH$ groups,one $H$ atom,and one terminal $O$ atom via a double bond. Thus,it has $1$ oxo group.$4$. $H_3PO_4$ (Phosphoric acid): The central $P$ atom is bonded to three $OH$ groups and one terminal $O$ atom via a double bond. Thus,it has $1$ oxo group.Comparing the number of oxo groups,$H_2SO_4$ has the maximum number $(2)$.

Which of the following compounds has the maximum number of oxo groups (terminal $O$ atoms bonded to the central atom by a double bond)?

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