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C(60) (buckyball) is cubic closest packe...

`C_(60)` (buckyball) is cubic closest packed (face-centered cubic) in its crystalline form. If you insert potassium atoms into all the tetrahedral and octahedral holes of the `C_(60)` structure, the formula would become `K_(x)C_(60)`. What is the value of x?

A

1

B

2

C

3

D

4

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