Ch400Ch6LN2 - Chem 400 Chapter 6 Lecture Notes Part 2 Ionic...

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Chem 400 Chapter 6 Lecture Notes Part 2 Ionic Bonds and Ionic Solids • You now know that metals tend to have low IE values and so lose electrons fairly readily to form cations. • And you also know that nonmetals tend to have more negative EA values and so attract electrons fairly readily to form anions. • So what happens when a metal atom collides with a nonmetal atom? • The metal atom with its small IE gives an electron (or more) to the nonmetal with its negative EA. • The resulting cation and anion have achieved a Noble Gas electron configuration. • And the cation and anion are held together by electrostatic forces (opposite charges attract). This is the ionic bond. • In an ionic solid like NaCl, you can’t separate out individual Na-Cl ionic bonds, instead it is a 3-D network of Na+ and Cl= ions which are interconnected. We also call this the crystal lattice. • This is mostly review, so now let’s delve in deeper! Born-Haber Cycle and the Lattice Energy
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This note was uploaded on 06/25/2008 for the course CHEM 400-401 taught by Professor Dr.samples during the Fall '06 term at American River.

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Ch400Ch6LN2 - Chem 400 Chapter 6 Lecture Notes Part 2 Ionic...

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