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Published byElisabeth Copeland Modified over 6 years ago
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Valence Electrons Def: the electrons in an atom’s outermost orbitals (usually the highest principal energy level) Write the noble-gas configurations for: Sulfur Cesium Francium The “leftover” electrons are the valence electrons!!!
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Valence Electrons (cont.)
Valence electrons are important in the formation of chemical bonds between atoms. They are represented visually by using electron-dot diagrams. Table 5-5, p.140 Examples on the board.
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Valence Electrons (cont.)
IMPORTANT NOTE: Dots may be placed in any order, on all four sides of the element symbol, then paired up until all are used.
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Group Practice & Self-Check
Assignment: P.141: 25, 26, 28 P.147: 81-82 Workbook Assignment: pp.29-30
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