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		The NaCl Unit Cell
		Check Your Learning
Can you recognize different ions in the alternate NaCl unit cell? Click an ion that is shared by two unit cells. Can you find another ion that is shared by two unit cells?		You clicked an ion that is completely within the unit cell. Would you like to review how to count such ions? You are correct. An ion in the center of a face is shared between two unit cells. You clicked an ion that is shared between four unit cells. Would you like to review how to count such ions? You clicked an ion that is shared between eight unit cells. Would you like to review how to count such ions?
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