question_answer

What type of crystal defect is indicated in the diagram below? \[N{{a}^{+}}\,C{{l}^{-}}\,N{{a}^{+}}\] \[C{{l}^{-}}\,\,N{{a}^{+}}\,\,C{{l}^{-}}\]       \[C{{l}^{-}}\] \[C{{l}^{-}}\,\,N{{a}^{+}}\,\,N{{a}^{+}}\] \[N{{a}^{+}}\,\,C{{l}^{-}}\] \[C{{l}^{-}}\,\,N{{a}^{+}}\,\,C{{l}^{-}}\]          \[C{{l}^{-}}\,\,N{{a}^{+}}\] \[C{{l}^{-}}\,\,N{{a}^{+}}\,\,N{{a}^{+}}\]

A)  Frenkel defect

B)  Schottky defect

C)  Interstitial defect

D)  Frenkel and Schottky defects