Consider a scenario involving two ion pairs: NaCl and MgF. The charges of the ions are as follows: Na⁺ and Cl⁻ have charges +1.00𝑒 and -1.00𝑒, respectively. On the other hand, Mg²⁺ and F⁻ have charges +2.00𝑒 and -1.00𝑒, respectively, where 𝑒=1.602×10⁻¹⁹ C. Calculate the net electrostatic force between the NaCl ion pair and the MgF ion pair, considering the positive direction to be to the right. Hint: Ignore the forces between ions of the same pair.

• A. 12.5 nN
• B. 15.1 nN
• C. 21.9 nN
• D. 24.5 nN

Answer: (B)