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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pn195

Select the correct statement(s) about ozone.

A $NO$ can deplete ozone through $NO + O X_{3} NO X_{2} + O X_{2}$ .
BIt makes mercury lose its meniscus (tailing) by forming $Hg X_{2} O$ .
CIt is a bent, diamagnetic molecule.
DIt is thermodynamically more stable than $O X_{2}$ .

Answer: A, B, C

All O atoms in

O X_{3}

have paired electrons and the molecule is bent. Ozone oxidises mercury to oxide, causing tailing.

NO

catalytically removes ozone. Ozone has a positive enthalpy of formation, so it is less stable than

O X_{2}

.

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