Answer
For a Cu2+O2- compound in which a small fraction of the copper ions exist as Cu+, there is one less positive charge introduced (or one more negative charge) for each Cu+ formed. In order to maintain the charge neutrality, addition of positive charge or subtraction of a negative charge may be needed. This may be accomplished either by creating Cu2+ interstitials or O2- vacancies.
Work Step by Step
For a Cu2+O2- compound in which a small fraction of the copper ions exist as Cu+, there is one less positive charge introduced (or one more negative charge) for each Cu+ formed. In order to maintain the charge neutrality, addition of positive charge or subtraction of a negative charge may be needed. This may be accomplished either by creating Cu2+ interstitials or O2- vacancies.
