losing valence electrons
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SNC2D1: Notes Chemistry LEWIS DOT DIAGRAM – Ionic Compounds A Lewis Dot Diagrams is a convenient and simplified model that can also be utilized to demonstrate the structures of chemical compounds and how electrons are involved in the formation of compounds. This model shows only the valence electrons of a particular atom (represented by little dots) and the symbol of that atom. Some examples of Lewis Dot Diagrams Ionic Bonds Recall that metals become positively charged by losing valence electrons and nonmeals become negatively charged by gaining electrons. The electrostatic forces between positive and negative ions create an ionic bond. Master Yoda Much Learning You Have Yes! Formation of Ionic compounds Metal + Non – Metal Instructions: For each pair of elements, sketch a diagram to show the transfer of electrons that occur when these two elements react. Lithium & Chlorine Lithium & Nitrogen Lewis Dot Diagram of Electron Transfer Master Yoda Much Learning You Have Yes! Aluminum & Phosphorus Calcium & Oxygen Potassium & Sulfur Beryllium & Fluorine Lewis Dot Diagram of Electron Transfer Lewis Dot Diagram of Electron Transfer Master Yoda Much Learning You Have Yes! Representing Molecular Compounds Using Lewis Dot Diagrams Recall that a covalent bond is the attraction between atoms that results from the sharing of electrons. A molecular compound is a chemical compound that is held together by covalent bonds. Molecular bonds can also be represented using Bohr-Rutherford diagrams or simplified Lewis Dot. Unpaired electrons are likely to participate in chemical bonds. The Octet Rule still applies. Hydrogen Gas Oxygen Gas Nitrogen Gas Atoms Sharing Convention Practice: Draw Lewis Dot diagrams for the following Molecular compounds Master Yoda Much Learning You Have Yes! Compound Methane Atoms Sharing Convention CH4 Water H2O Carbon Dioxide CO2 SNC2P1 NOTES CHEMISTRY LEWIS DOT DIAGRAM IONIC & MOLECULAR COMPOUNDS 1. Draw the Lewis dot diagram for the elements below. See example below. Electron dot = Lewis dot diagram Hydrogen Master Yoda Helium Lithium Beryllium Much Learning You Have Yes! Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminum Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium 2. Draw Lewis Dot diagrams for the following molecular compounds Compound Atoms Sharing Convention chlorine gas Cl2 nitrogen trichloride NCl3 Master Yoda Much Learning You Have Yes! Bromine gas Br2 3. Draw Lewis for the following ionic compounds aluminum & iodine beryllium & sulfur aluminum iodide beryllium sulfide AlI3 BeS Lewis Dot Diagram of Electron Transfer Name of Compound Chemical Formula calcium & bromine potassium & nitrogen Lewis Dot Diagram of Electron Transfer Master Yoda Much Learning You Have Yes! Name of Compound Chemical Formula calcium bromide potassium nitride CaBr2 K 3N lithium & oxygen aluminum & Fluorine lithium oxide aluminum fluoride Li2O AlF3 Lewis Dot Diagram of Electron Transfer Name of Compound Chemical Formula Master Yoda Much Learning You Have Yes!
