Lecture 5 - Lecture 5: Ionic and Covalent Bonding Electron...

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Lecture 5: Ionic and Covalent Bonding Electron affinity of noble gases revisited—the value is close to zero, but whether or not it is negative is controversial. The Atkins book says negative. So does the textbook “Chemistry, the Science in Context”, published by Norton. Wikipedia says this is incorrect. UIUC Chemistry notes say that the noble gas values are zero, but that some other elements like Be and N are negative(http://butane.chem.uiuc.edu/cyerkes/Chem102AEFa07/Lecture_Notes_102/Lect ure%2011.pdf). Ionic bonds—leading from electron configurations. Strictly electrostatic attractions. There are optimum geometries to reach the most stable arrangements of ions in space. We will revisit this topic when we discuss special types of bonds Valence electrons and the octet rule G.N. Lewis proposed that atoms combine so that they end up with eight electrons in the outermost (s and p) shell. We now call molecular structures based on covalent bonds “Lewis structures”.
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Lecture 5 - Lecture 5: Ionic and Covalent Bonding Electron...

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