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question

How much energy in electron volts must be expended to separate the atoms in the potassium iodide molecule, 39_k 127_I, if the ions are originally separated by a distance R = 3.04 × 10^\rule{1em}{1pt}10 m? The potential energy for coulomb's law of force is, E_P = \rule{1em}{1pt}ke^2 / d where e is the electric charge of each ion and d is the distance between the charges. K = 9 × 10^9 N \textbullet m^2 / c^2

category

physics

options

  1. 9.3 eV
  2. 3.9 eV
  3. 4.2 eV
  4. 8.6 eV
  5. 3.3 eV
  6. 6.4 eV
  7. 2.5 eV
  8. 4.8 eV
  9. 7.1 eV
  10. 5.7 eV

src

stemez-Physics

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