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10/09/2020 7:55 pm
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If NaCl is doped with 10–3 mol % of SrCl2, what is the concentration of cation vacancies?
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10/09/2020 7:56 pm
When a cation of higher valence is put in an ionic solid, it starts replacing cations of lower valency such that the crystal remains electrically neutral. Thereby, creating some vacant sites. For instance, if Sr2+ is put in NaCl, each Sr2+ ion replaces two Na+ ions. Thereby creating one vacant for every Sr+ ion introduced.