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Why do we write charges when we write ionic compounds?

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Ionic compounds are those which have a significant difference in polarity or electronegativity difference. No compound is 100% ionic or 100% covalent. read more

What you want to do is make the compound neutral. Let's take the following example: #Na^(+)# + #SO_4^(2-)# We need to balance the charges, the easiest way to balance this charge is by looking at the overall charge of the ions involved. The #Na# ion has a #+1# charge and the #SO_4# ion has a #-2# charge. read more

The key to writing proper ionic formulas is simple: the total positive charge must balance the total negative charge. Because the charges on the ions are characteristic, sometimes we have to have more than one of a cation or an anion to balance the overall positive and negative charges. read more

Ionic compounds are neutral compounds made of positive cations and negative anions. Writing the chemical formula for ionic compounds is fairly easy. Write the cation symbol, then the anion symbol. Write the respective charges for each one. Find the lowest common multiple for the ions to make the compound neutral. read more

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