Chemistry - CHEMICAL BONDING Question with Solution | TestHub

A diamagnetic compound has all its electrons paired. We determine this by analyzing the molecular orbital (MO) configuration or Lewis structure to count unpaired electrons.

A. Na₂O₂ (Sodium peroxide): O₂²⁻ ion has 18 electrons (8+8+2), all paired. Diamagnetic.

B. O₃ (Ozone): Has 18 valence electrons. Its resonance structures show all electrons are paired. Diamagnetic.

C. KO₂ (Potassium superoxide): O₂⁻ ion has 17 electrons (8+8+1), with one unpaired electron. Paramagnetic.

D. N₂O (Nitrous oxide): Has 16 valence electrons. Its resonance structures show all electrons are paired. Diamagnetic.