If molten NaCl contains SrCl_2 as impurity,cr | vedclass

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(B) When molten $NaCl$ containing a small amount of $SrCl_2$ is crystallized,some $Na^{+}$ ion sites are occupied by $Sr^{2+}$ ions. Each $Sr^{2+}$ io

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Cationic vacancies

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(B) When molten $NaCl$ containing a small amount of $SrCl_2$ is crystallized,some $Na^{+}$ ion sites are occupied by $Sr^{2+}$ ions. Each $Sr^{2+}$ ion replaces two $Na^{+}$ ions to maintain electrical neutrality. One $Sr^{2+}$ ion occupies the site of one $Na^{+}$ ion,while the other site remains vacant. Thus,the number of cationic vacancies produced is equal to the number of $Sr^{2+}$ ions incorporated into the crystal lattice.

If molten $NaCl$ contains $SrCl_2$ as impurity,crystallization can generate

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