MCQ
The correct order of $S_N1$ reactivity is


- A$I > II > III$
- ✓$II > III > I$
- C$II > I > III$
- D$III > II > I$

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$xMnO_4^ - \, + \,y{C_2}O_4^{2 - }\, + \,z{H^ + }\, \rightarrow $$\,xM{n^{2 + }} + 2yC{O_2} + \frac{z}{2}{H_2}O$
The value's of $x, y$ and $z$ in the reaction are, respectively :