MCQOPTIONS
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MCQOPTIONS
| 1. |
F-centers are _________ |
| A. | Cathodic vacancy in a crystal occupied by one or more paired electron |
| B. | Cathodic vacancy in a crystal occupied by one or more unpaired electron |
| C. | Anionic vacancy in a crystal occupied by one or more paired electron |
| D. | Anionic vacancy in a crystal occupied by one or more unpaired electron |
| Answer» E. | |