Covalent bonding AH Chemistry Unit 1(b).

Slides:

Advertisements

Similar presentations

Covalent Bonding and Molecular Compounds.  Many chemical compounds are composed of molecules.  A molecule is a neutral group of atoms that are held.

Advertisements

Drawing Lewis Structures and VSEPR. Draw basic Lewis dot structures of atoms and compounds. Using VSEPR, predict bond shape from electron arrangement.

Sections 8.1 – 8.2 Bonding in Covalent Molecules.

Chapter 8 Homework posted Lab Notes Today’s Topic: Bond Properties (Sec there is no 8.3!) Electron Distribution in Molecules (8.5) November 16, 2009.

Advanced Higher Chemistry Unit 1 Lewis diagrams and resonance structures.

Chemical Bonding I: The Covalent Bond

The Nature of Covalent Bonding Objectives: 1. Describe the characteristics of a covalent bond. 2. Describe the difference between polar and nonpolar covalent.

-Types of Covalent Bonds -Rules for Writing Lewis Dot Structures of Molecular Compounds Chemistry Mrs. Coyle.

Lecture 41 Molecular Structures Ozgur Unal 1.  Molecular formula for compounds do not show how atoms are bonded together in a molecule.  In order to.

Covalent Bonding and Molecular Structure (OWLBook Chapter 8) Covalent Bonding Lewis Structures Bond Properties Electron Distribution VSEPR and Molecular.

Quick Review Covalent bond – two atoms held together by sharing electrons -- Usually occurs between nonmetals. Octet Rule – chemical compounds tend to.

1 Covalent bonding. 2 How does H 2 form? l The nuclei repel ++

Chapter 6 Chapter 6 Representing Molecules 1.

Lewis Structures Of Covalent Compounds

Lewis Structures Of Covalent Compounds NAB Method.

L EWIS S TRUCTURES Lewis structures represent molecules or polyatomic ions by showing the position of atoms and balance electrons. Bonded (shared) electrons.

A visual representation of covalent compounds.  1. Octet Rule ◦ Covalent compounds share electrons so that each atom has an octet of electrons (8) in.

Lewis Structures In Covalent Bonds valence electrons are distributed as shared or BOND PAIRS , and unshared or LONE PAIRS. • •• H Cl shared or bond pair.

Writing Lewis Formulas Chem 1061 Updated November 2009 ©Lance S. Lund Anoka-Ramsey Community College.

Bonding Unit Learning Goal #1: Analyze the relationship between the valence (outermost) electrons of an atom and the type of bond formed between atoms.

IIIIII I. Lewis Diagrams Ch. 9 – Molecular Structure C. Johannesson.

COVALENT BONDING Chapter 6, Sections 1&2. Electronegativity  A measure of the ability of an atom in a chemical compound to attract electrons from another.

1 Chapter 8 “Covalent Bonding” Ball-and-stick model.

Lewis Structures & VSEPR Meyer Lewis Structures Lewis Structure – Picture of a molecule – Uses lines to indicate chemical bonds – Uses dots to indicate.

Nature of Covalent Bonding Part 2: Double & Triple Covalent Bonds.

Chapter 8: Lewis Structures and the Octet Rule AP Chemistry

 Answer the following questions in full sentences (include question in answer) so that they form notes. 1.Why do atoms bond together? 2.What are 3 ways.

Covalent Bonding : Describe the covalent bond as the electrostatic attraction between a pair of electrons and positively charged nuclei :

Today’s Do Now 1. Write the formula for chlorine trifluoride. 2. Write the name of NO 2 3. Draw the Lewis dot diagram for Hydrogen. 4. Draw the Lewis dot.

Chemical Bonding I: The Covalent Bond

Chapter 6 Table of Contents Section 1 Covalent Bonds

Nature of Covalent Bonding

Chapter 10 Properties of Solids and Liquids

Structures and Properties

Unit 8: Lewis Dot (again…)

Lewis Dot Structures Lewis Dot structures are used to represent the valence electrons of atoms in covalent molecules Dots are used to represent only the.

Nature of Covalent Bonding

Lewis Diagrams for Polyatomic Ions

Chapter 6-2 Lewis Structures (p. 206 – 207).

Chapter 8 Covalent Bonding 8.2 The Nature of Covalent Bonding

Chemistry 141 Wednesday, November 8, 2017 Lecture 27

Unit 6 – Molecular Structure

Drawing Lewis Structures (electron dot diagrams)

Molecular Structure Lewis Diagrams (p. 170 – 175).

Sections 8.1 – 8.2 Bonding in Covalent Molecules

Molecular Structures Section 9.3

Electron Dot Diagram Find your element on the periodic table.

V. Lewis Dot Diagrams for Double & Triple Bonds + Polyatomic Ions

Chapter 6-2 Lewis Structures (p. 208 – 209).

Electron Dot Diagram Find your element on the periodic table.

Covalent Bonding.

Writing Lewis Structures

8-3 Resonance When there is more than one way to write the formula for a molecular compound, the compound exists in all of those forms...this is called.

Lewis Structures visualize molecular structure

Ch. 6 – Molecular Structure

Lewis Structures visualize molecular structure

Valence Shell Electron Pair Repulsion

Valence Shell Electrons are all that matter in bonding.

Electron Dot Diagram Find your element on the periodic table.

Chapter 6-2 Lewis Structures.

Ch. 8-2 II Nature of Covalent Bonding

Ch. 6 – Molecular Structure

10.5 Tro's Introductory Chemistry, Chapter 10.

Electron Dot Diagram Find your element on the periodic table.

Lesson 3.3 Lewis Dot Diagrams

Lewis Structures SCH3U/4C March 2016.

Lewis Structures visualize molecular structure

Lewis Structures.

Covalent Bonding and Molecular Compounds

Presentation transcript:

Covalent bonding AH Chemistry Unit 1(b)

Potential energy diagram Bond dissociation energy Bond length (distance between nuclei at minimum energy)

Lewis formulae

Dative covalent bonds Co-ordinate covalent bonds

Writing Lewis formulae Calculate total valence electrons – for ions, add or subtract electrons accordingly Write skeleton structure – more electronegative atoms usually surround central atom Distribute electrons to atoms surrounding central atom Distribute remaining electrons to central atom

Examples SCl2 COCl2 BF4-

Resonance structures Represents delocalised bonding You describe the electron structure of a molecule having delocalised bonding by writing all possible electron-dot formulae

Ozone

Sulphur dioxide

Carbonate ion

Exceptions to the octet rule BCl3 PCl5