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Table of Contents Atomic Symbols
Checkpoint 1
Chemical Formula
Covalent 1
Covalent 2
Ionic 1
Ionic 2
Checkpoint 2

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Learning Zone - Chemical Symbols and Formula

covalent 1 Covalent Compounds 2 ionic compounds

Another example: Carbon dioxide has a chemical formula of CO2. How is this possible? This is illustrated as follows:

Carbon dioxide formula structure

In this case, the double line of one side indicates two bonds are required to connect between the carbon atom and an oxygen atom. Notice that the total number of allowable bonds for both carbon and oxygen is still maintained.

A single line is usually referred to as a single bond. A two-line symbol as a double bond and a three-line symbol as a triple bond.

Covalent 1 ionic compounds


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