MCQOPTIONS
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| 1. |
The number of pentagons in C60 and trigons (triangles) in white phosphorus, respectively, are: |
| A. | 20 and 3 |
| B. | 12 and 4 |
| C. | 12 and 3 |
| D. | 20 and 4 |
| Answer» C. 12 and 3 | |