Guidelines for writing Lewis Dot Structures Identify the central atom (the atom to which the other atoms will be attached) -The central atom is the one.

Slides:



Advertisements
Similar presentations
Molecular Geometries and Isomers
Advertisements

Drawing Lewis structures
Lewis Dot Structures and Molecular Geometry
VSEPR MODEL Valence Shell Electron Pair Repulsion Model A model for predicting the shapes of molecules and ions in which valence shell electron pairs are.
Molecular Geometry Chapter 9 AP Chemistry Chapter 9 AP Chemistry.
Molecular shapes Balls and sticks. Learning objectives  Apply VSEPR to predict electronic geometry and shapes of simple molecules.
Molecular Geometry 2-2 Ch. 6 – Molecular shape. Molecules are three-dimensional objects that occupy a three- dimensional world; In general, only the smallest.
Molecular Geometry & Bonding Theories
Chapter 9 MoCu. VSEPR Theory Electron pairs around a central atom arrange themselves so that they can be as far apart as possible from each other.
Molecular Shapes Chapter 6 Section 3. Molecular Structure It mean the 3-D arrangement of atoms in a molecule Lewis dot structures show how atoms are bonded.
Lewis Structures & VSEPR. Lewis Structure Lewis Structures – shows how the _______________ are arranged among the atoms of a molecule There are rules.
can overlap in 2 different ways, forming either sigma or pi bonds.
Chapter 9 Molecular Geometries and Bonding Theories.
Molecular Shape VSEPR Model. Molecular Shape Physical/Chemical PROPERTIES SHAPE of Molecule (VSEPR) Overlap of ORBITALS (Hybridization)
Lewis Symbols and the Octet Rule Electron Dot Symbols convenient way of showing the valence electrons of atoms. Consists of the chemical symbol and one.
Molecular Geometry & Bonding Theories
Ch. 9 Molecular Geometry & Bonding Theories Lewis structures tell us which atoms are bonded together, but we will now explore the geometric shapes of these.
Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Covalent Bonding: Hybrid Atomic Orbitals.
Molecular Geometries and Bonding Chapter 9 Molecular Geometries and Bonding Theories.
Writing Lewis Structures of Molecules 1.Determine the central atom (atom in the middle) - usually is the “single” atom - least electronegative element.
Honors Shapes to Know: See Honors Packet – Linear – Trigonal Planar – Bent (with 3 e- regions and with 4) – Trigonal Pyramidal – Tetrahedral – Trigonal.
Molecular shapes A simple matter of balls and sticks.
Molecular Geometry. 2-D and 3-D Lewis Structures explain the two dimensional structure of molecules In order to model the actual structure of a molecule.
Unit 3: Chemical Bonding
IIIIII Molecular Geometry Molecular Structure. A. VSEPR Theory  Valence Shell Electron Pair Repulsion Theory  Electron pairs orient themselves so that.
Review Double and Triple Bonds
Molecular Geometry. Basic Terminology Molecule Group of atoms held together by covalent bonds Bond Length Distance between 2 bonded atoms Bond Energy.
Chemistry Chapter 9 Notes #3. Representing Molecules Molecular Formula –Ex. CH 4 –Ex. H 2 O Structural/ Lewis Formula Ball & Stick Model Space Filling.
Valence Shell Electron Pair Repulsion Theory (4.3 of textbook)
VSEPR MODEL Valence Shell Electron Pair Repulsion Model A model for predicting the shapes of molecules and ions in which valence shell electron pairs are.
VESPR Theory. Molecular Structure Molecular structure – _______________ arrangement of atoms in a molecule.
COVALENT BONDING: ORBITALS Chapter 9. Hybridization The mixing of atomic orbitals to form special molecular orbitals for bonding. The atoms are responding.
Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chemistry FIFTH EDITION by Steven S. Zumdahl University of Illinois.
VSEPR Theory Valence Shell Electron Pair Repulsion.
II. Molecular Geometry Ch. 6 – Molecular shape. Molecules are three-dimensional objects that occupy a three- dimensional world; In general, only the smallest.
Chapter 9 Molecular Shape.
Molecular Geometry Lewis Structures VSEPR Theory
Hybrid Orbitals © Evan P. Silberstein, 2010.
Ch.14 Covalent Bonding Hybridization.
Sections 9.4 & 9.5 Molecular Geometries and Bonding Theories
VSEPR and Molecular Geometry
Structure & Properties of Matter
Valence Shell Electron Pair Repulsion Theory
Lewis Structures & VSEPR
Valence Shell Electron Pair Repulsion
MOLECULAR GEOMETRY Bonding Unit.
O = O V___________ S________ E________ P______ R____________
Ch. 6 – Molecular Structure
Types of Covalent Bonds
Molecular Shapes: True shapes of molecules
Molecular Structure and Shape
Valence Shell Electron Pair Repulsion Theory
Chapter 9 Molecular Geometry and Bonding Theories
Objectives To understand molecular structure and bond angles
Molecular shapes.
Unit 3: Chemical Bonding
VESPR Theory.
Valence Shell Electron Pair Repulsion Theory
Molecular Geometry.
Unit 9: Covalent Bonding
Bellwork # What is electronegativity?
Hybridization College Chemistry.
Valence Shell electron pair repulsion model 3D models
Molecular Shapes VSEPR Model
Molecular Shapes Mrs. Chan.
Molecular Geometry.
Valence Shell Electron Pair Repulsion
The SHAPES of molecules
N19 - VSEPR and the 3D Geometry of Molecules
Lewis Dot & VSPER.
Presentation transcript:

Guidelines for writing Lewis Dot Structures Identify the central atom (the atom to which the other atoms will be attached) -The central atom is the one having the lowest ionization energy (or lowest electronegativity) Determine the total number of valence electrons –Remember to include any extra electrons, if present

Guidelines for writing Lewis Dot Structures Arrange atoms in a symmetrical fashion (remember that this is being done in 2 dimensions rather than 3) Use a single pair of electrons for each bond Place remaining electrons around the rest of the atoms in groups of 2

Guidelines for writing Lewis Dot Structures Use the OCTET RULE to determine the exact arrangement of electrons with each atom The only exception to the octet rule is hydrogen which requires only 2 electrons.

Guidelines for writing Lewis Dot Structures Sharing of a single pair of electrons between two atoms constitutes a single bond which is called a sigma bond (  ) The electrons in a bond are counted twice, once with each of the atoms that form the bond to determine if the octet rule is satisified

Guidelines for writing Lewis Dot Structures Sharing of two or more pairs of electrons between 2 atoms constitutes a multiple bond - The first pair of electrons is a sigma bond (  ) - each of the remaining pairs of electrons forms a bond which is called a pi bond (  )

Resonance

A sigma (  ) bond centers along the internuclear axis. A pi (  ) bond occupies the space above and below the internuclear axis. Sigma and Pi Bonds

Summary of Bonding Types # of  bonds # of  bonds (Honors) Steric Number # of pairs of non-bonded electrons VSEPR designation Bond angle,  Molecular Geometry 4040 sp Tetrahedral 3041 sp Trigonal Pyramidal 2042 sp Bent 3130 sp 2 120Trigonal Planar 2220 sp 180Linear

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com. Inc. All rights reserved.