PPT-8.1 Chemical Bonds, Lewis Symbols, and the Octet Rule

Chemical bond attractive force between atoms or ions Ionic bond electrostatic force between oppositelycharges ions results from the transfer of electrons from a metal to a nonmetal Covalent bond . , let’s see what Lewis structure is. Lewis structure, also called electron-dot structure, is a structural formula in whicbetween two atoms represent a covalent bond. It was named from Gilbert New (Chp. 8,9). :. Bonding & Molecular Geometry. Chemistry, The Central Science. , 10th edition. Theodore L. Brown; H. Eugene . LeMay. , Jr.; and Bruce E. . Bursten. John D. . Bookstaver. St. Charles Community College. Ms. . Grobsky. Chemical Bonding. Bonding is the interplay between interactions between atoms. Energetically favored. Electrons on one atom interacting with protons of another atom. Energetically unfavorable. Chemical bond. - attractive force between atoms or ions. Ionic bond . - electrostatic force between oppositely-charges ions; results from the transfer of electrons from a metal to a nonmetal.. Covalent bond . Breaking the octet rule. Some compounds have atoms with more or less than 8 electrons around them (breaking the octet rule). There are 3 types. 1. odd numbered electrons. 2. electron deficient compounds. Bonding. Bonding models for methane, CH. 4. . Models are NOT reality. Each has its own strengths and limitations.. Ga . Standards. Students know . atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds.. Malcolm, Xavier, Genna. Octet Rule. -Small molecules and polyatomic ions can use basic octet rule.. -Larger molecules, determine general arrangement of atoms, skeleton.. -Always includes central atom, atoms surrounding it bonded.. Rule Breakers . . Some molecules disobey octet rule. C, N, O, and F are mostly rule keepers. 1) Odd Number of Valence Electrons. 2) Incomplete Octets. 3) Expanded Valence Shells . Molecular Exceptions to the Octet Rule. Lewis . Structures. The Octet/Duet Rule. The chemical properties of atoms primarily depend on their valence configuration. They seem to have a tendency to be noble-gas-like meaning losing, gaining, or sharing electrons so that they end up being surrounded by the same number of valence electrons as noble gas atoms (8, except He which has 2).. Text:. Ch 8 (all except sections 4,5 & 8). Ch 9.1 & 9.5. Ch 10.1-10.7. My Name is Bond. Chemical Bond. PART 1: . Ionic & Covalent Bonding. Chemical Bonds. A chemical bond is an attraction between 2 atoms or ions.. Bonding Theories. Explain how atoms bond together to form molecules. Explain why some combinations are stable and others are not. Table salt . NaCl. …. Not NaCl. 2. Water is H. 2. O …. Not H. 3. Types of Chemical Bonds. Ionic bonds. : attraction between positive and negative ions (e- are lost or gained. ). m. etal + nonmetal (K. 2. O). Covalent bonds. : . sharing. of electrons between two . PS21. Friday, January 27, 2017. Worst Taught Science Topics in Middle and High School Chemistry/Physical Science?. 1) Electronic structure (Bohr model) of the atom. 2) Eight electron rule for chemical bonding. Jennie L. Borders. Section 8.1 – Chemical Bonds, Lewis Symbols, and the Octet Rule. Whenever two atoms or ions are strongly attached to each other, we say there is a chemical bond between them.. There are three general types of chemical bonds: ionic, covalent, and metallic..