Consider the following compounds:
$\underline{K}O_2$,$H_2\underline{O}_2$ and $H_2\underline{S}O_4$.
The oxidation states of the underlined elements in them are,respectively,

  • A
    $+1, -1$ and $+6$
  • B
    $+2, -2$ and $+6$
  • C
    $+1, -2$ and $+4$
  • D
    $+4, -4$ and $+6$

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