Presentation is loading. Please wait.

Presentation is loading. Please wait.

4.2 THREE DIMENSIONAL STRUCTURE

Published byKimberly Stokes Modified over 6 years ago

Similar presentations

Presentation on theme: "4.2 THREE DIMENSIONAL STRUCTURE"— Presentation transcript:

1 4.2 THREE DIMENSIONAL STRUCTURE

2 The shape of a molecule is VERY important and dictates how it behaves/ reacts. (ex. Enzymatic reactions in biology) VSEPR Theory Valence Shell Electron Pair Repulsion Theory -helps us to predict the 3D shape of a molecule

3 VSEPR THEORY A method used to determine molecular geometry based on the idea that electron pairs are as far apart as possible Bonding and lone pair electron position themselves as far apart as possible in a molecule to minimize electron-pair repulsion.

4 SOME EXAMPLES… Beryllium chloride (BeCl2) Boron trifluoride (BF3)

5 MORE EXAMPLES… 3) Methane (CH4) 4) over-filled octets: PCl5 and SF6

6 HOW TO ILLUSTRATE A 3D STRUCTURE:

7 LONE PAIRS Lone pairs tend to repel more than bonding pairs do, so they decrease bond angles. Ex. Ammonia Ex. Water

8

9

10

11

12

13

14

15

Download ppt "4.2 THREE DIMENSIONAL STRUCTURE"

Similar presentations

IIIIII II. Molecular Geometry (p. 183 – 187) Ch. 6 – Molecular Structure.

IIIIII II. Molecular Geometry (p. 183 – 187) Ch. 6 – Molecular Structure.
Molecular Geometry (p. 232 – 236)

Molecular Geometry (p. 232 – 236)
VSPER Molecular shapes Valence Shell Electron Repulsion Theory.

VSPER Molecular shapes Valence Shell Electron Repulsion Theory.
Structure of molecules Objectives: To understand molecular structure and bond angles To learn to predict molecular geometry from the number of electron.

Structure of molecules Objectives: To understand molecular structure and bond angles To learn to predict molecular geometry from the number of electron.
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 2-2 Ch. 6 – Molecular shape. Molecules are three-dimensional objects that occupy a three- dimensional world; In general, only the smallest.
Chapter 9 Molecular Geometry and Bonding Theories.

Chapter 9 Molecular Geometry and Bonding Theories.
VSEPR Theory Geometry of Molecules.

VSEPR Theory Geometry of Molecules.
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.

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.
Section 12.4 Structure of Molecules 1.To understand molecular structure and bond angles 2.To learn to predict molecular geometry from the number of electron.

Section 12.4 Structure of Molecules 1.To understand molecular structure and bond angles 2.To learn to predict molecular geometry from the number of electron.
B. Ionic bonding and Structures of Ionic Compounds

B. Ionic bonding and Structures of Ionic Compounds
Molecular Structure VSEPR Model. VSEPR Valence Shell Electron Pair Repulsion The structure around a given atom is determined principally by minimizing.

Molecular Structure VSEPR Model. VSEPR Valence Shell Electron Pair Repulsion The structure around a given atom is determined principally by minimizing.
VSEPR Model And Hybridization. VSEPR Model Valence Shell Electron Pair Repulsion Model a simple model that allows for the prediction of the approximate.

VSEPR Model And Hybridization. VSEPR Model Valence Shell Electron Pair Repulsion Model a simple model that allows for the prediction of the approximate.
VSEPR Theory Valence Shell Electron Pair Repulsion.

VSEPR Theory Valence Shell Electron Pair Repulsion.
Molecular Shape Section 9.4

Molecular Shape Section 9.4
Molecular Geometry VSEPR Theory.

Molecular Geometry VSEPR Theory.
IIIIII Molecular Geometry Molecular Structure. A. VSEPR Theory  Valence Shell Electron Pair Repulsion Theory  Electron pairs orient themselves so that.

IIIIII Molecular Geometry Molecular Structure. A. VSEPR Theory  Valence Shell Electron Pair Repulsion Theory  Electron pairs orient themselves so that.
Cornell Notes (Section 8.4, especially page 263  Topic: Molecular Geometry  Date: 2/7/2012  VSEPR = Valence Shell Electron Pair Repulsion  Valence.

Cornell Notes (Section 8.4, especially page 263  Topic: Molecular Geometry  Date: 2/7/2012  VSEPR = Valence Shell Electron Pair Repulsion  Valence.
Chemistry Chapter 9 Notes #3. Representing Molecules Molecular Formula –Ex. CH 4 –Ex. H 2 O Structural/ Lewis Formula Ball & Stick Model Space Filling.

Chemistry Chapter 9 Notes #3. Representing Molecules Molecular Formula –Ex. CH 4 –Ex. H 2 O Structural/ Lewis Formula Ball & Stick Model Space Filling.
Section 8.3 Bonding Theories. VSEPR Theory Electron dot structures fail to reflect the three dimensional shapes of the molecules. VSEPR Valence Shell.

Section 8.3 Bonding Theories. VSEPR Theory Electron dot structures fail to reflect the three dimensional shapes of the molecules. VSEPR Valence Shell.
Shapes of Molecules. Valence Shell Electron Pair Repulsion Theory (VSEPR) Electrons can be placed in two categories Bonding pairs [involved in a bond]

Shapes of Molecules. Valence Shell Electron Pair Repulsion Theory (VSEPR) Electrons can be placed in two categories Bonding pairs [involved in a bond]

Similar presentations

Ads by Google