Chemical Bonding What is the bond called if (a)Electrons are transferred? (b)Electrons are shared equally? (c)Electrons are not shared equally?

Slides:

Advertisements

Similar presentations

Chemical Bonding and Interactions

Advertisements

Chapter 9 Notes – Part III Mr Nelson Polarity But just because a molecule possesses polar bonds does not mean the molecule as a whole will be polar.

MOLECULAR SHAPE HOW DOES SHAPE AND POLARITY DETERMINE FUNCTION AND PROPERTIES OF MOLECULES?

Chemical Bonding Why? To achieve stability (happiness)  Lower energy level  8 electrons –react so as to achieve the valence level configuration of NEAREST.

Chapter 4 Compounds and Their Bonds 4.7 Shapes and Polarity of Molecules 1 Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh.

SHAPES OF MOLECULES. REMINDER ABOUT ELECTRONS  Electrons have negative charges  Negative charges “repel” each other  In molecules, electrons want to.

Chapter 6 – Covalent Compounds Section 3 – Molecular Shapes.

Unit 04: BONDING IB Topics 4 & 14 Text: Ch 8 (all except sections 4,5 & 8) Ch 9.1 & 9.5 Ch My Name is Bond. Chemical Bond.

VSEPR Theory Geometry of Molecules.

Ions Ion – Charged Atom Cation - positive charged atom Anion negative charged atom Charge equals the A group number.

VSEPR Valence Shell Electron Pair Repulsion Theory Predicting Molecular geometry or molecular shapes.

Molecular Compounds Section 9.3 and Chapter 8. Nomenclature for Molecular Compounds When two NONMETALS are bonded together: 1.Write the names of the elements.

Chapter 3: Molecular Shape and Structure

Chemical Bonding and Molecular Structure Chapter 12 Sec Chapter 12 Sec

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

Unit 6 Notes – Part II Mr Nelson Bonding & Lone Pairs Electron pairs that are shared are called bonding pairs Electron pairs that are not bonded.

1 Chemical Bonding 1.Lewis Dot Structures 2.Electronegativity 3.VSEPR 4.Polarity 8 - Copyright © The McGraw-Hill Companies, Inc. Permission required for.

Monday and Tuesday March 26 and 27. Lewis Dot Structures.

CHEMICAL BONDING Chemical bonding can involve two extremes: (1) the equal sharing of electrons between two like atoms to form a covalent bond, and (2)

Chapter 8 Covalent Compounds. Covalent Bonds Sharing Electrons –Covalent bonds form when atoms share one or more pairs of electrons nucleus of each atom.

Lewis Structures Electron-Dot-Diagrams For Molecules.

1 VSEPR: stands for... l V alence S hell E lectron P air R epulsion l Predicts the 3d shape of molecules. l The name tells you the theory: –Valence shell.

Polarity Chapter 6.1. Review A covalent bond is formed between two non-metals. Electrons are shared. Orbitals are overlapping.

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.

VSEPR Theory Valence Bond Theory Molecular Orbital Theory Molecular Geometry.

Section 3.3 – Part A Pg Objective: 1) Apply VSEPR theory to predict molecular shapes.

Chemistry 11 Resource: Chang’s Chemistry Chapter 9.

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.

Chapter 6 Chemical Bonding.

Chemical Bonding and Molecular Structure Chapter 12 Sec

Covalent Compounds Chapter Covalent Bonds. Covalent Bond The sharing of electrons between atoms Forms a molecule To have stable (filled) orbitals.

Section 3: Molecular Geometry.  Multiple Bonds – occur in covalent compounds when atoms share more than one pair of electrons  Double Bond – atoms share.

Chemical Bonding Chapter 6. Molecular Geometry VSEPR Valence – Shell, Electron Pair Repulsion Theory.

Chapter 6 Chemical Bonding. Bonding Theory and Electronegativity Atoms want to achieve noble gas configuration- 8 valence e- Some elements have stronger.

Valence Shell Electron Pair Repulsion Theory –Electron pairs orient themselves in order to minimize repulsive forces.

Molecular Geometry: Lewis Structures & VSEPR. Our Goal… To determine the shape and polarity of a molecule using Lewis structures.

Objectives VESPR Theory Continue with Lewis dot Drawings.

Covalent Bond A chemical bond in which electrons are shared. Each atom has access to a full octet (8 electrons). No electrical charges.

6.8 Shapes and Polarity of Molecules

Polarity, Water and Biological Molecules

VSEPR Theory Valence Shell Electron Pair Repulsion

Valence Shell Electron Pair Repulsion Theory

Ch. 8-3 I Bonding Theories Covalent Bonding.

Thursday, November 20, 2014 Objective: Students will use VSEPR theory to predict the shapes of molecules. Warm-Up: Draw the Electron Dot Diagrams for the.

Drawing Molecules and Shapes

MOLECULAR GEOMETRY Topic # 18

Bellwork Monday Draw the following Lewis dot structures. CCl4 NH4+

Molecular Geometry VSEPR and beyond!.

O = O V___________ S________ E________ P______ R____________

Chemical Bonding Unit 2 Topic 3 Chapter 6.

Chemical Bonding.

My Name is Bond. Chemical Bond

Section 5.3—Molecules in 3D

The Nature of Covalent Bonding

Drawing Molecules and Shapes

Although all covalent bonds involve a sharing of one or more pairs of electrons between bonding atoms, most of the time this sharing is not equal. One.

VSEPR Theory Geometry of Molecules.

QUIZ: Hybridization & VSEPR Theory

Drawing Molecules and Shapes

Warm up Draw lewis structures for the compounds below: CF4 BF3 CO2.

Bellwork # What is electronegativity?

Lesson Valence Shell Electron Pair Repulsion Theory (VSEPR)

Molecular Geometry.

Drawing Molecules and Shapes

Molecular Shapes In order to predict molecular shape, we assume the valence electrons repel each other. Therefore, the molecule adopts whichever 3D geometry.

VSEPR Theory Geometry of Molecules.

Do Now: HCO3-1 has 3 resonance structures. Which of them contribute significantly to the electronic structure of the molecule? Drawing a Lewis structure.

Presentation transcript:

Chemical Bonding What is the bond called if (a)Electrons are transferred? (b)Electrons are shared equally? (c)Electrons are not shared equally?

Covalent Bonds Are very strong Draw Lewis structures for F 2, O 2, N 2 Which bond is stronger?

Bond Strength Depends on (a) Bond length = distance between the bonds (b) Number of bonds (no. of shared e)

Polar Covalent Bond Electrons not shared equally One end of the bond is slightly more negative, and the other end is slightly more positive.

3 Types of Chemical Bond

Examples Determine the type of chemical bond for the following using differences in electronegativities (absolute value) (a)NaCl (b)CH 4 (c)F 2

Answer

Predict Formula of Covalent Compounds Criss-cross Valence

Examples (a) P and Cl (b) B and O (c) C and S (d) P and O

Shape and Behaviour of Molecules Lewis structures can be used to help visualize molecules in 3 dimensions. Since all electrons carry the same charge, it is reasonable to assume that electron pairs in bonds and lone pairs will be oriented in a molecule as far away from each other as possible.

Valence Shell Electron Repulsion Theory (VSEPR)

Draw Lewis Structures for each example and correspond to the VSEPR shapes.