MCQ
Which one of the following molecules is polar ?
- A$XeF_4$
- ✓$IF_5$
- C$SbF_5$
- D$CF_4$

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Statement $I$: Nitration of benzene involves the following step -
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Statement $II$: Use of Lewis base promotes the electrophilic substitution of benzene.
In the light of the above statements, choose the most appropriate answer from the options given below: