MCQ
In which pair second ion is more stable than first?


- A$(i)$ and $(ii)$
- ✓$(ii)$ and $(iii)$
- C$(ii)$ and $(iv)$
- D$(iii)$ and $(iv)$

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$A\, + \,{O_2}\, \to \,B\,\,\,;\,\,\,B\, + \,{H_2}O\, \to \,C\, + \,A$
$A\,\,B$ and $C$ respectively are