Verified Solution • 2025–26 Session moderate

QJEEM18Cha0cc: JEE Main 2018 Chemistry - Class 12 JEEM18Cha0cc Solution: In KO 2 , the nature of oxygen species and the oxydation state…

In KO2, the nature of oxygen species and the oxydation state of oxygen atom are, respectively :

Multiple Choice Options

  • A Oxide and −- 2
  • B Superoxide and −- 1/2
  • C Peroxide and −- 1/2
  • D Superoxide and −- 1

Step-by-Step Verified Solution

KO2 is called potassium superoxide. Here O 2−_2^ - is the superoxide ion.

Oxidation state of K is +1 and let oxidation state of oxygent atom is = x

∴   \therefore\,\,\, 1 + 2(x) = 0

⇒\Rightarrow    \,\,\, x = −- 12{1 \over 2}

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