MCQ
Among the fluorides below, the one which does not exist is
- A$Xe{F_4}$
- ✓$He{F_4}$
- C$S{F_4}$
- D$C{F_4}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Statement $I$: $\mathrm{S}_8$ solid undergoes disproportionation reaction under alkaline conditions to form $\mathrm{S}^{2-}$ and $\mathrm{S}_2 \mathrm{O}_3{ }^{2-}$
Statement $II$: $\mathrm{ClO}_4^{-}$can undergodisproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below :
