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Solved: The binding energy of a potassium chloride
Chapter 42, Problem 38P(choose chapter or problem)
The binding energy of a potassium chloride molecule (KCl) is 4.43 eV. The ionization energy of a potassium atom is 4.3 eV, and the electron affinity of chlorine is 3.6 eV. Use these data to estimate the equilibrium separation between the two atoms in the KCl molecule. Explain why your result is only an estimate and not a precise value.
Questions & Answers
QUESTION:
The binding energy of a potassium chloride molecule (KCl) is 4.43 eV. The ionization energy of a potassium atom is 4.3 eV, and the electron affinity of chlorine is 3.6 eV. Use these data to estimate the equilibrium separation between the two atoms in the KCl molecule. Explain why your result is only an estimate and not a precise value.
ANSWER:Step 1 of 2
Given
Bonding energy of KCl = 4.43 eV
Ionization energy of K = 4.3 eV
Electron affinity of Cl = 3.6 eV