If the Electrostatic Potential Energy of Na⁺ and F^- Ions $\times$

question 30

Multiple Choice

If the electrostatic potential energy of Na⁺ and F^- ions at their equilibrium separation (with U = 0 at infinite separation) is -1.19 $\times$ 10^-18 J,then their equilibrium separation must be approximately

• A)2.14 nm
• B)0.193 nm
• C)0.876 nm
• D)1.32 nm
• E)0.374 nm

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