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<p><strong>Fig. 3-6:</strong> Polar molecules (top) and nonpolar molecules (bottom). Note that carbon dioxide has two covalent bonds between each oxygen atom and the carbon atom, which is shown here as two lines and referred to as a double bond.</p>

 

Fig. 3-6: Polar molecules (top) and nonpolar molecules (bottom). Note that carbon dioxide has two covalent bonds between each oxygen atom and the carbon atom, which is shown here as two lines and referred to as a double bond.