Which of the following reactions is an example of a redox reaction?

Question:

Which of the following reactions is an example of a redox reaction?

 

  1. $\mathrm{XeF}_{4}+\mathrm{O}_{2} \mathrm{~F}_{2} \rightarrow \mathrm{XeF}_{6}+\mathrm{O}_{2}$

  2. $\mathrm{XeF}_{2}+\mathrm{PF}_{5} \rightarrow\left[\mathrm{XeF}^{+} \mathrm{PF}_{6}^{-}\right.$

  3. $\mathrm{XeF}_{6}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{XeOF}_{4}+2 \mathrm{HF}$

  4. $\mathrm{XeF}_{6}+2 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{XeO}_{2} \mathrm{~F}_{2}+4 \mathrm{HF}$


Correct Option: 1

Solution:

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