CHEM 1211 Chapter Notes - Chapter 9-10: Lone Pair, Chemical Polarity, Valence Electron

• School: KSU
• Department: Chemistry
• Course: CHEM 1211
• Professor: Tiffany Monroe

Document Summary

Chemical bonds are the forces that hold the atoms together in substances. A lewis electron-dot symbol consists of the symbol for the element surrounded by dots, one for each valence electron. An electron-configuration notation in which only the valence electrons of an atom of a particular element are shown, indicated by dots placed around the element"s symbol. Atomic symbols represent nuclei and inner-shell electrons. Dot-pairs or dashes between 2 atomic symbols represent electron pairs in covalent bonds. Dots adjacent to only one atomic symbol represent unshared electrons called. Lone pairs = they do not participate in bonding. Cations of most representative elements have no valence shell electrons shown in the lewis symbol. Lewis symbols of most monatomic anions show eight valence electrons. Ionic bonding results from electrostatic attraction between cations and anions. Formation if an ionic bond can be viewed as a transfer of electrons.