MDCAT Chemistry MCQ #927

What distinguishes the paramagnetism of O₂ from the diamagnetism of N₂?

MDCAT Chemistry MCQ #927

  1. Question 1

    Q1. What distinguishes the paramagnetism of O₂ from the diamagnetism of N₂?

    • A) O₂ has paired electrons in π orbitals
    • B) N₂ has unpaired electrons in σ orbitals
    • C) O₂ has unpaired electrons in π* orbitals
    • D) N₂ has higher electron affinity

    Answer: O₂ has unpaired electrons in π* orbitals

    Explanation: O₂'s π* orbitals have unpaired electrons (C). N₂'s filled π* orbitals make it diamagnetic (B is incorrect).