Consider the Molecular-Orbital Energy-Level Diagrams for O₂ and NO

question 42

Multiple Choice

Consider the molecular-orbital energy-level diagrams for O₂ and NO. Which of the following is true?
I. Both molecules are paramagnetic.
II. The bond strength of O₂ is greater than the bond strength of NO.
III. NO is an example of a homonuclear diatomic molecule.
IV. The ionization energy of NO is smaller than the ionization energy of NO⁺.

• A) I and II only
• B) I, II, and IV
• C) I and IV
• D) II and III
• E) I only