PPT-IONIC BONDS

Presented By Dr Vatsala Soni Bonding in Solids We have discussed bonding in molecules with three models Lewis Valence Bond MO Theory The above models arent suitable for describing bonding in solids metals ionic compounds. Anions. Cations. Naming Ions. Naming Ionic Compounds. Writing Ionic Formulas. Identify some Anions and . Cations. Anions. Cations. Metals Lose Electrons . (. Cations. = +). Nonmetals tend to gain electrons (Anions = -). Chapter 4.10,4.11 and 5. Combining Elements. When we begin combining elements we make compounds.. Two types. Non-metal and metal. Non-metal and non-metal. Each type has unique physical and chemical properties. Valence Electrons and Bonding. The number of valence electrons (electrons in the outermost energy level) in an atom of an element determines many properties of that element, including the ways in which the atom can bond with other atoms.. Very Important!. Going down the periodic table the properties are affected by INCREASING SIZE and INCREASING DISTANCE between the nuclei and the valence . e-s. Going across a period, properties are affected by the DIFFERING VALENCE, NUCLEAR CHARGE and CHARGE ON THE SPECIES. Na. +. Al. 3+. S. 2–. 2Ca. 2+. PO. 4. 3–. 3Cl. –. Review: forming ions. Ionic (i.e. salt) refers to +ve ion plus -ve ion. Usually this is a metal + non-metal or metal + polyatomic ion (e.g. NaCl, NaClO. Covalent bonding. Ionic bonding. Ionic Bonding. Bonding as you’ve never imagined it. http://www.youtube.com/watch?v=BCYrNU-7SfA. Objectives. To consider the features of ionic and covalent bonds, and the compounds they make. SCH4U1. Mr. . Dvorsky. Ionic Solids. Result from the reaction of a metal and a non-metal. Because of the large . electronegativity. difference, electrons transfer from the metallic atom to the non-metallic atom and the ions that result attract each other. . Copyright © by Holt, Rinehart and Winston. All rights reserved.. Objectives. Name . simple ionic . compounds. .. Predict . the charge of a transition metal . cation. in an ionic compound.. Write . chemical formulas for simple ionic compounds.. on the CO. 2. Electroreduction . studied by Sum Frequency Spectroscopy. Natalia Garcia Rey and Dana D. Dlott. University of Illinois at Urbana-Champaign. International Symposium on Molecular Spectroscopy. cation. bonds with Bromine.. Write the formula for . . gold(I) sulfide.. In the ionic compound Co. 3. N. 2. ,. which . cation. is present? . . Co (II) or Co (III). Ionic Bonds Containing . Transition Metals. Chapter 7. An . ion. is an atom that has gained or lost electrons from the valence shell.. Valence electrons. are the electrons contained in the highest occupied energy level. These electrons will mostly determine the chemical properties of the element. Focus on equations with a precipitate.. Total Ionic Equations. Write the equation . (synthesis, decomposition, etc. .). check . for reactants and products that are . soluble. or . insoluble. .. We usually assume the reaction is in . Net ionic equations are useful in that they show only those chemical species directly . participating in . a chemical . reaction. The keys to being . able to . write net ionic equations are the ability to recognize monatomic and polyatomic ions, . When elements combine to form compounds a chemical reaction occurs creating a new compound with properties that are different from the original elements.. When a new compound is formed it has a new chemical formula. A .