#### Question

According to Coulomb's law, rank the interactions between charged particles from lowest potential energy to highest potential energy. a. a 1 + charge and a 1- charge separated by 100 pm. b. a 2+ charge and a 1 - charge separated by 100 pm. c. a 1 + charge and a 1 + charge separated by 100 pm. d. a 1 + charge and a 1- charge separated by 200 pm

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#### Step 1

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The nitrogen valence e- will have a higher effective nuclear charge. Be has four protons, and N has seven. Both atoms have two core electrons that contribute to shielding, and the electrons would add a small amount of shielding. Beryllium has a nuclear effective charge of slightly more than $2^+$, and Nitrogen has a nuclear effective charge of slightly more than 5$^+$.

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