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Chemistry · PYQ NEET UG 2019(2)

हिन्दी

Which of the following is paramagnetic?

  1. \( \mathrm{O_2} \)
  2. \( \mathrm{N_2} \)
  3. \( \mathrm{H_2} \)
  4. \( \mathrm{Li_2} \)

Correct answer · Option 1

\( \mathrm{O_2} \)

Explanation

According to molecular orbital theory, \( \mathrm{O_2} \) has 16 electrons with two unpaired electrons in \( \pi^* 2p \) orbitals, making it paramagnetic.

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