If the Equilibrium Separation of Na⁺ and F^- Ions Is $\times$

question 14

Multiple Choice

If the equilibrium separation of Na⁺ and F^- ions is 0.193 nm,then their electrostatic potential energy (with U = 0 at infinite separation) must be approximately

• A)-1.19 \(\times\) 10^-18 J
• B)1.19 \(\times\) 10^-18 J
• C)7.42 J
• D)-7.42 J
• E)4.64 \(\times\) 10¹⁹ J

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