Lec-15-Chap-08-1 - CHE 131 Lecture 15, 2/24/2006 Lecture 15...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE 131 Lecture 15, 2/24/2006 1 Lecture 15 (Chapter 8) Covalent Bonds (8.1) Single Bonds (8.2) Multiple Bonds (8.4) Lewis Structures (8.2) Examples of Molecules with Single Bonds (8.3) Benjamin S. Hsiao Department of Chemistry Stony Brook University Covalent Bonding sharing of electrons between atoms H . + H . H:H Atomic Interactions H-H Bond Formation
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CHE 131 Lecture 15, 2/24/2006 2 Octet Rule In chemical bond formation an atom gains or loses electrons, or shares pairs of electrons, until its valence shell has eight electrons. This rule holds for most main group elements. For hydrogen the number of electrons is two. Lewis Symbol for an Element Sulfur: element symbol S Group 16 (6A) 6 valence electrons Valence of sulfur is normally 2 Paired electrons Unpaired electron S S H H S . H H . Molecules with Single Bonds Number of electrons Number shared to complete an Group of valence octet number electrons Example 14( 4A )4 4 C i n CH 4 15( 5A )5 3 N i n N F 3 16( 6A )6 2 O i n H 2 O 17( 7A )7 1 F i n H F H H H Lewis structures are formal two-dimensional representations of three-dimensional objects.
Background image of page 2
CHE 131 Lecture 15, 2/24/2006 3 Lewis Structures of Molecules with Multiple Bonds O :: : C ⋅⋅ ⋅⋅ :: ⋅⋅ ⋅⋅ O: Carbon dioxide, CO 2 : C ::: O : Carbon monoxide, CO C H H C H H
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

Lec-15-Chap-08-1 - CHE 131 Lecture 15, 2/24/2006 Lecture 15...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online