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Suppose that CaO is added as an impurity to Li2O. If the Ca2+ substitutes for Li+, what kind of vacancies would you expect to form? How many of these vacancies are created for every Ca2+ added? Group of answer choices Positive charges are eliminated by creating lithium vacancies, and for every Ca2+ ion added, a single lithium vacancy is formed. Positive charges are eliminated by creating calcium vacancies, and for every Ca2+ ion added, a single calcium vacancy is formed. Positive charges are eliminated by creating lithium vacancies, and for every Li+ ion added, a single lithium vacancy is formed. Positive charges are eliminated by creating calcium vacancies, and for every Li+ ion added, a single calcium vacancy is formed.

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Answer:

Positive charges are eliminated by creating lithium vacancies, and for every Ca2+ ion added, a single lithium vacancy is formed.

Explanation:

The addition of calcium oxide as an impurity to lithium oxide creates an  interstices due to the replacement of the Lithium ion by calcium ion. The creation of  interstices is as a result of  the replacement of the positive ions (Lithium by calcium). To make the reaction neutral, these replacements must occur  when the interstices are formed

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