Which of the following pairs is likely to be paramagnetic? H, N, O

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37. From the above, which of the following pairs is likely to be paramagnetic?

• An element is paramagnetic if it has unpaired electrons in its atomic orbitals.
  • I. H ($1s^1$): Has 1 unpaired electron. (Paramagnetic)
  • II. N ($1s^2 2s^2 2p^3$): Has 3 unpaired electrons in its $2p$ orbitals. (Paramagnetic)
  • III. O ($1s^2 2s^2 2p^4$): Has 2 unpaired electrons in its $2p$ orbitals. (Paramagnetic)