Lec-12-Chap-07-4P - Lecture 12 Electron Configuration and...

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1 Lecture 12 Electron Configuration and the Periodic Table Periodic Trends: Ionization Energies 7.11 Periodic Trends: Electron Affinities 7.12 Ion Formation and Ionic Compounds 7.13 Energy Considerations in Ionic Compound Formation 7.14 Lecture 12, Knowledge and Skills • Know the definition of ionization energy of an element • Know the trends in first ionization energies • Explain the relative ionization energies of adjacent elements • Explain the relative sizes of first, second, and following IEs of particular elements • Know the definition of electron affinity • Know the trends in electron affinity • Set up a Born-Haber cycle to calculate the lattice energy or any other energy, e.g. electron affinity, of the cycle • Estimate the relative lattice energies of ionic solids, depending on the relative sizes of the ions Periodic Trends: Ionization Energy Ionization energy (IE) E to remove an e - from a gas-phase atom Mg(g) Mg + (g) + e - ± E = Ionization Energy Also called IE 1 (First ionization energy)
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