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Lithium iodide crystal has a face cen...

Lithium iodide crystal has a face centred cubic unit cell . If the edge length of the unit cell is 550 pm , determine the ionic radius of ` I^(-)` ion.

A

`1.815Å`

B

`2.8Å`

C

`3.8Å`

D

`4.815Å`

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The correct Answer is:
A
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