We’re being asked to determine the exothermic step and write the chemical equation for the fourth step of a Born-Haber cycle for the formation of BaI2 from its the elements.
The Born-Haber cycle is an approach to analyze reaction energies. The cycle is concerned with the formation of an ionic compound from the reaction of a metal (often a Group 1A or Group 2A element) with a halogen or other non-metallic element.
The steps involved in the formation of an ionic compound from its metal element and nonmetal element stable form are
Step 1: Sublimation of the metal into its gaseous form.
Step 2: Ionization of the metal to its ion
List the individual steps used in constructing a Born - Haber cycle for the formation of BaI2 from the elements. Which of the steps would you expect to be exothermic?
Write chemical equation for fourth step of a Born - Haber cycle.
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What scientific concept do you need to know in order to solve this problem?
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