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NEET2009Chemistrys Block ElementsActual

The correct order of stability of the superoxides is

Options

  1. AKO ₂> RbO ₂> CsO ₂
  2. BKO ₂> CsO ₂> RbO ₂
  3. CCsO ₂> RbO ₂> KO ₂
  4. DRbO ₂> CsO ₂> KO ₂

Correct answer

C. CsO ₂> RbO ₂> KO ₂

Step-by-step solution

Stability of superoxides increases with increase in size and electropositivity of the metal. Hence, the order is CsO ₂> RbO ₂> KO ₂ .

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