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| 1. |
Explain with an example how impurity defect develops in NaCl crystal. |
| Answer» Solution :`SrCl_(2)` is added to molten `NaCl` and crystallised. Some `Na^(+)` sites will be OCCUPIED by `Sr^(2+)`. Each `Sr^(2+)` REPLACES two `Na^(+)` ions and THUS cationic vacancy is PRODUCED for EVERY `Sr^(2+)` ion added. | |