General Chemistry 2: Lesson 1 - Chemical Bonding I (PDF)

GENERAL CHEMISTRY 2 Lewis Dot Symbols, Lewis Structures, Octet Rule and its Exceptions How do we distribute electrons around an atom of the following elements? A. Hydrogen B. Oxygen C. Chlorine  represent the electrons of an atom using Lewis dot symbols draw the Lewis structure of ionic a...

GENERAL CHEMISTRY 2 Lewis Dot Symbols, Lewis Structures, Octet Rule and its Exceptions How do we distribute electrons around an atom of the following elements? A. Hydrogen B. Oxygen C. Chlorine  represent the electrons of an atom using Lewis dot symbols draw the Lewis structure of ionic and covalent compounds state the octet rule describe the exceptions to the octet rule Lewis electron dot symbols or Lewis dot symbols are symbols of elements where each valence electron is represented by a dot. What can you infer from the image?  What is the difference between ionic and covalent bond? IONIC BONDING COVALENT BONDING results from electrostatic results from sharing one or attractions among ions, formed more electron pairs between by the transfer of one or more two atoms electrons from one atom to another How do we visualize the electrons in a bond? atoms transfer or share electrons to establish a stable electron configuration (usually one with 8 valence electrons: OCTET RULE). noble gases to elements: General Trend: Cations become isoelectronic with the preceding noble gas. Anions become isoelectronic with the following noble gas. What does the line represent in a covalent compound? 1. Incomplete octets: compounds with Be, B, and Al can have less than 6 electrons in valence 2. Expanded valence shells: central element has more than 8 valence electrons Why do some elements possess an expanded octet? List of compounds with non-octet configuration 1. PI3 2.SiCl4 3.FCN 4.HNO 5.C3H6