Which of the following oxides is expected to exhibit paramagnetic behaviour?

• A

  $\mathrm{CO}_3$
• B

  $\mathrm{SiO}_2$
• C

  $\mathrm{SO}_2$
• Correct answer
  D

  $\mathrm{ClO}_2$

Solution

$\mathrm{ClO}_2$ shows paramagnetic character due to presence of unpaired electron.

Hence, the correct answer is option: 'D'.