Which of the following is an example of redox reaction ?

Options

A. `XeF_(6)+H_(2)OrarrXeO_(2)F_(2)+4Hf`
B. `XeF_(6)+2H_(2)OrarrXeO_(2)F_(2)+4Hf`
C. `XeF_(4)+O_(2)F_(2)rarrXeF_(6)+O_(2)`
D. `XeF_(2)+PF_(5)rarr[XeF]^(+)PF_(6)^(-)`

Answer

c

Explanation

`(a) overset(+6)Xeoverset(-1)F_+(6)+H_(2)Orarroverset(+6)XeOF_(4)+2HF`
`(b) overset(+6)XeF_(6)+2H_(2)OrarrXeO_(2)F_(2)+4HF^(-)`
(c )
(d)`XeF_(2)+PF_(5)rarr[xeF]^(+)PF_(6)^(-)`
In option (a) ,(b) and (d) O.N of the atoms remains the same but in option (c ) O.N of Xe increasses from +4 in `XeF_(4)` to +6 in `XeF_(6)` while the O.N of P decreases from +1 in `O_(2)F_(2)` to 0 in `O_(2)F_(2)` in `O_(2)` thus it is a redox reaction