Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
KCET2020Chemistrys Block Elements

The oxide of potassium that does not exist is

Options

  1. AK ₂ O
  2. BKO ₂
  3. CK ₂ O ₂
  4. DK ₂ O ₃

Correct answer

D. K ₂ O ₃

Step-by-step solution

K ₂ O ₂ may exists. K ₂ O exists. KO ₂ also exists. But, K ₂ O ₃ can not exist as O ₃²⁻ is not a stable entity.

Practice s Block Elements on Quantrex Academy →

More from s Block Elements

Choose a false statement regarding the properties of sodium hydroxide. 2026Which element from following forms superoxide with oxygen? 2026What is the general formula of halide salts of alkali metals if M is a metal atom ? 2026Which from the following metal chlorides does not contain water of crystallisation ? 2026Which of the following compounds is formed when chlorine reacts with dry slake lime Ca(OH) ₂ ? 2026Identify the alkali metal having the smallest atomic size from following. 2026Identify the elements of alkali metals and alkaline earth metals respectively having highest 1st ionization enthalpy. 2026Which alkaline earth metal carbonate decomposes most easily? 2026 Full s Block Elements list All KCET PYQs