Which of the following reactions are correctly written?

Option 1 is balanced (Xe 2, F 12, Si 1, O 2) and shows XeF6 attacking silica. Option 2 is balanced with H2 reducing Xe(IV) to Xe(0). Option 3 is XeF6 accepting fluoride. Option 4 is wrong because XeF4 donates $\mathrm{F}{}^{-}$ to give $\mathrm{XeF}{}_3{}^{+}$, not $\mathrm{XeF}{}_5{}^{+}$ (which comes from XeF6).