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Another Look at Bonding
Ionic Bonds Drawing the bond Mg and Cl Write the Oxidation numbers Mg +2 and Cl -1 Mg +2 Cl -1
Covalent Bonds Bonding Sites Cl and F Cl F Unshared Pairs
Covalent Bonds Bonding Sites Cl F Bonding Site (Find lonely Electron) Shared Pair
Another way to look at Covalent Bonds What makes the atom happy……8 val e - Exceptions – Hydrogen (2) and Boron (6) O and S = = 12 Valence Electrons
Another way to look at Covalent Bonds Subtract to find the number of electrons that will be alone O and S = = ÷ 2 Divide by two to determine the number of bonds (2 electrons per bond…) = 2 bonds
Final Product of O and S O S 2 bonds Lone Pairs or Unshared Pairs 8 valence e -
Section 12.3 Lewis Structures 1.To learn to write Lewis structures 2.To learn to write Lewis structures for molecules with multiple bonds Objectives.
A visual representation of covalent compounds. 1. Octet Rule ◦ Covalent compounds share electrons so that each atom has an octet of electrons (8) in.
Chemical Bonds. 2 Types of Chemical Bonds 1. Ionic 2. Covalent.
Electron Distribution in Molecules Electron distribution is depicted with Lewis (electron dot) structuresElectron distribution is depicted with Lewis (electron.
Chemical Bonding. Chemical Bond The forces that hold groups of atoms together and make them function as a unit Bonding involves only the valence electrons.
Nature of Covalent Bonding Part 2: Double & Triple Covalent Bonds.
Lewis Structures In Covalent Bonds valence electrons are distributed as shared or BOND PAIRS, and unshared or LONE PAIRS. In Covalent Bonds valence electrons.
Chemistry Unit 4 Bonding Why do atoms bond? -to become more stable -a full valence shell of electrons -valence shell = outside shell How do atoms bond?
Lewis Structures = Dot Diagrams We can show how the atoms share or transfer electrons by drawing electron dot diagrams. You will only use the valence e-
#7 Draw electron dot structures for each molecule a. chlorine Cl First step is to place the correct number of valence electrons on the drawing. Second.
Lewis Structures and Formal Charge. Rules Governing Formal Charge Calculate Formal Charge Add up the lone pair electrons on the atom, and half of the.
Covalent Bonds Due 11/21/13
Identifying Bonds (Ionic vs. Covalent) Double & Triple Covalent Bonds.
Drawing Lewis Structures of Molecules Chapter 4 Section 4.
Intro to Bonding: Part 2: Covalent Compounds (Type 3 Binary Compounds)
Electron Dot and Structual Diagrams for Covalent Compounds.
Coordinate Covalent Bond Ammonia NH 3 to Ammonium Ion [NH 4 ] + One atom contributes both electrons in a bond.
When does the octet rule fail?. H, He and Li Helium strives for 2 valence electrons –1s 2 configuration Hydrogen will sometimes will share its one electron.
Section 12.3 Lewis Structures 1.To predict the electron arrangement in molecules 2.To learn to write simple Lewis structures 3.To learn to write Lewis.
Covalent Bonding Lewis dot structures. Covalent Bonding - Bohr Atoms overlap slightly, and one unpaired electron from each atom will pair together Both.
Bonding. This presentation shows two types of bonding. Ionic bonding Covalent bonding Click on the type of bonding you want to view.
Chapter 7-2 Covalent Bonding. Covalent Bonds Electrons are shared between two atoms Atoms with covalent bonds are called molecules Anything made of molecules.
Lewis Dot Diagrams. Each row of the periodic table is called a period All elements in a period have the same number of atomic orbitals (or shells) Each.
Lewis Structures and Chemical Bonding. Valence Electrons The electrons that exist in the outermost electron shell of an atom We can determine the number.
LEWIS STRUCTURES. How to draw Lewis structures for Neutral molecules 1. Determine the total valence electrons for the molecule. Find the # of valence.
Covalent Bonds Forming single, double, and triple bonds.
Bonding and Structure 1 Chemical Bonding and Molecular Structure Ionic vs. covalent bonding Molecular orbitals and the covalent bond Valence electron Lewis.
L EWIS S TRUCTURES Lewis structures represent molecules or polyatomic ions by showing the position of atoms and balance electrons. Bonded (shared) electrons.
Lewis Dot Diagrams Show where electrons and bonds exist in covalent compounds. [http://www.bbc.co.uk/schools/gcsebitesize/img/gcsechem_54.gif]
Polarity Ch 6.2b. Covalent Bonding When two nonmetals meet - one atom is NOT strong enough to take electrons from the other! So they must share them.
Tuesday 10/19/10. Return Naming Compounds Quiz Collect Symbol Me Projects Lewis structures Metallic Bonding Hydrogen Bonding Jeopardy Review.
Gilbert Newton Lewis (surrounded by pairs of electrons) Lewis Dot Structures & Covalent Bonding.
Carbon dioxide Attaching the second oxygen leaves both oxygen 1 short and the carbon 2 short O C O.
8.4 DETERMINING MOLECULAR SHAPES. THE MODEL WE WILL USE TO DETERMINE MOLECULAR SHAPE IS CALLED _________ (V_____________ S_________ E_____________ P________.
Drawing and Naming Molecules Lewis Dot Structures and Multiple Bonds.
Table 1.7 Average Bond Dipoles of Selected Covalent Bonds Bond Dipoles.
Drawing Lewis Structures Hydrogens are always on the outside.
Covalent Bonding and Molecules. Atoms and Stability Atoms bond with other atoms to become stable.
Covalent Bonding. Covalent Bond Chemical bond formed by the sharing of a pair of electrons.
Bonding. Ionic Bonding Chemical bonding that results from the electrical attraction between cations and anions is called ionic bonding. Cations give up.
Nature of Covalent Bonding Part 1: Single Covalent Bonds.
Covalent bonding. Covalent bonds Nonmetals hold onto their valence electrons. They can’t give away electrons to bond. Still want noble gas configuration.
An ELECTRON DOT DIAGRAM is a model of an atom in which each dot represents a valence electron. Draw dot diagrams for H, He, Be, and Br!
Ionic & Covalent Bonds. A compound is a substance whose smallest unit is made up of atoms of more than one element bonded together.
Chemical Bonding Why do atoms stick together, anyway? Who cares?
Intro to Ionic/Covalent Video Intro to Ionic/Covalent Video.
Covalent Bonding Vocabulary covalent bond covalent bond single bond single bond double bond double bond triple bond triple bond molecule molecule structural.
Lecture 1.1 Refresh your high school chemistry CS882, Fall 2006.
WARM UP: 1. Draw the Lewis diagram for the formation of Calcium Sulfide. 2. What happens to e- during ionic bond formation?
Objectives VESPR Theory Continue with Lewis dot Drawings.
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