The Diagram Shows the Spin Angular Momentum Vectors of Two

question 1

Multiple Choice

The diagram shows the spin angular momentum vectors of two electrons and two protons in the same external magnetic field. The field points upward in the diagram. Rank the situations according to the potential energy, least to greatest.

• A) 1 and 3 tie, then 2 and 4 tie
• B) 2 and 3 tie, then 1 and 4 tie
• C) 1 and 2 tie, then 3 and 4 tie
• D) 3 and 4 tie, then 1 and 2 tie
• E) all tie

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