Consider the following molecules: $\mathrm{Br}_{3} \mathrm{O}_{8}, \mathrm{~F}_{2} \mathrm{O}, \mathrm{H}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}, \mathrm{H}_{2} \mathrm{~S}_{5} \mathrm{O}_{6}$, and $\mathrm{C}_{3} \mathrm{O}_{2}$. Count the number of atoms existing in their zero oxidation state in each molecule. What is their sum?
JEE · Chemistry · previous-year question
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