Question
Asked Jan 29, 2020
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Predict the formula of the compound of Ga3+ and O2-

 

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Expert Answer

Step 1

The formula of the compound of Ga3+ and O2- is to be given.

Step 2

To write the formula of an ionic compound-

  1. First write the symbol of cation with charge.
  2. Then write the symbol of anion with charge.
  3. Now, in an ionic compound the total charge of cations is balanced by the total charge of anions.

Thus, cations and anions must combine to form an electrically neutral compound.

And to obtain this, the charge on one becomes the subscript of the other.

  1. The subscripts of the cation and anion should be the lowest whole number ratio.
Step 3

Now, cation is a positively charged ion and anion is a negatively charged ion.

...

Chemistry homework question answer, step 3, image 1
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