What is true about the change? \[ \mathrm{SO}_{2}+\frac{1}{2} \mathrm{O}_{2} \rightarrow \mathrm...
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What is true about the change?
\[
\mathrm{SO}_{2}+\frac{1}{2} \mathrm{O}_{2} \rightarrow \mathrm{SO}_{3}
\]
I. Hybrid state of sulphur changes from \( s p \) to \( s p^{2} \).
II. Bent shape of \( \mathrm{SO}_{2} \) changes to trigonal planar.
III. Bond angles between \( \mathrm{O}-\mathrm{S}-\mathrm{O} \)-atoms are different.
(A) I and II
(B) I and III
(C) II and III
(D) III only
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