Ionic and Covalent Bonding II

Ionic and Covalent Bonding II

Author: Angela Nichols

The goal of this packet is to move beyond an introductory understanding of ionic and covalent bonding. After studying this packet students should be able to predict bond type using periodic trends and electronegativity data.

This packet contains a video about ionic and covalent bonding. A periodic table with electronegativities is included along with text summarizing how to predict bond type using either periodic trends or electronegativity data.

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Link to Ionic and Covalent Bonding I

A Deeper Look at Ionic and Covalent Bonding

Predicting Bond Type Using Periodic Trends

Group 1 and 2 elements (except for hydrogen) tend to form ionic bonds with nonmetals

Nonmetals tend to form covalent bonds with each other and Hydrogen

Oxygen, Nitrogen, and Fluorine tend to form polar covalent bonds

Carbon and Hydrogen form nonpolar covalent bonds with each other

Periodic Table of Electronegativities in Paulings

Periodic Table of Electronegativities in Paulings

Predicting Bond Type Using Electronegativity Data

1) Look up the electronegativity of the two atoms involved in the bond

2) Find the difference between their electronegativities

3) The greater the difference is, the more ionic the bond will be

       Difference < 0.5 = nonpolar covalent

       0.4 < Difference < 1.7 = polar covalent

       Difference > 1.7 = ionic

Independent Practice Solutions