Which of the following statement(s) is (are) correct?

  • A
    The coordination number of each type of ion in $CsCl$ crystal is $8$.
  • B
    The length of the unit cell in $NaCl$ is $552 \ pm$ $(r_{Na^{+}} = 95 \ pm; r_{Cl^{-}} = 181 \ pm)$.
  • C
    $A$ unit cell of an ionic crystal shares some of its ions with other unit cells.
  • D
    All of the above

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