Q42 / 180 · KCET 2020 · Chemistry
The oxide of potassium that does not exist is
- A$\mathrm{K}_{2} \mathrm{O}$
- B$\mathrm{KO}_{2}$
- C$\mathrm{K}_{2} \mathrm{O}_{2}$
- Correct answerD$\mathrm{K}_{2} \mathrm{O}_{3}$
Solution
$\mathrm{K}_{2} \mathrm{O}_{2}$ may exists.
$\mathrm{K}_{2} \mathrm{O}$ exists.
$\mathrm{KO}_{2}$ also exists.
But, $\mathrm{K}_{2} \mathrm{O}_{3}$ can not exist as $\mathrm{O}_{3}^{2-}$ is not a stable entity.
Hence, the correct answer is option: 'D'.