The unit of silver iodide ( $A g I$ ) has $4$ iodine atoms in it. How many silver atoms must be there in the unit cell?

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Solution

The correct option is C $4$
The formula $A g I$ tells that the ratio of silver atoms to iodine atom is $1 : 1$ . Hence if there are 4 iodine atoms in the unit cell, there must be $4$ silver atoms.

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